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Code Issues Projects Releases Wiki Activity

fix(curriculum): allow positive numbers only for decimal to binary conversion (#54708)

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This commit is contained in:
Anne Deepa Prasanna
2024-05-23 00:51:47 +05:30
committed by GitHub
parent 7700a4f450
commit e70ef2a03f
99 changed files with 484 additions and 212 deletions
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3
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/63db7f4677d06d7500a13321.md
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@@ -13,6 +13,9 @@ All of the HTML and CSS for this project has been provided for you.
When you're ready to get started, use the `.getElementById()` method to get the input element with the id `number-input`, and store it in a variable called `numberInput`. Use the same method to get the button element with the id `convert-btn` and store it in a variable called `convertBtn`, and the `h2` element with the id `result` and store it in a variable called `result`.
**NOTE**: This project will only convert positive numbers into binary.
# --hints--
You should use the `document.getElementById()` method to get the `#number-input` element.

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curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64007367d54d2a7efbf44fcf.md
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@@ -19,12 +19,21 @@ isNaN("3.5"); // false
Update the second condition in your `if` statement to use the `isNaN()` function to check if the value returned by `parseInt()` is `NaN`.
# --hints--
You should wrap the value returned by `parseInt()` in the `isNaN()` function.
Also,as we mentioned in step 1 that we are considering only positive numbers, we should add a third condition in `if` statement to check whether the number is less than 0 (i.e negative numbers)
```js
assert.match(String(checkUserInput), /if\s*\(\s*!\s*numberInput\s*\.\s*value\s*\|\|\s*isNaN\(\s*parseInt\(\s*numberInput\s*\.\s*value\s*\)\s*\)\s*\)\s*\{/);
6 < 0; // false
-1 < 0; // true
-8 < 0; // true
0 < 0; //false
```
# --hints--
You should wrap the value returned by `parseInt()` in the `isNaN()` function. And add a third condition which checks the value returned by `parseInt()` to be less than 0.
```js
assert.match(String(checkUserInput), /if\s*\(\s*!\s*numberInput\s*\.\s*value\s*\|\|\s*isNaN\(\s*parseInt\(\s*numberInput\s*\.\s*value\s*\)\s*\)\s*\|\|\s*parseInt\(\s*numberInput\s*\.\s*value\s*\)\s*\<\s*0\s*\)\s*\{/);
```
The body of your `if` statement within `checkUserInput` should be empty.

12
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64475c0b61cddb6feaab4e2e.md
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@@ -9,7 +9,7 @@ dashedName: step-13
Now you can alert the user if they don't enter a number, or the number is invalid before you attempt to convert it into binary.
In the body of the `if` statement, use the `alert()` method to display the text `Please provide a decimal number`.
In the body of the `if` statement, use the `alert()` method to display the text `Please provide a decimal number greater than or equal to 0`.
Note that `alert()` is a method on the `window` object in the browser, so you can use either `window.alert()` or `alert()`.
@@ -21,7 +21,7 @@ You should call the `alert()` method within the body of your `if` statement with
assert.match(String(checkUserInput), /if\s*\(\s*.+\s*\)\s*\{\s*(window\s*.)?\s*alert\(/);
```
When there is a falsy value in the `#number-input` element and the `checkUserInput()` function is called, the `alert()` method should display the text `Please provide a decimal number`.
When there is a falsy value in the `#number-input` element and the `checkUserInput()` function is called, the `alert()` method should display the text `Please provide a decimal number greater than or equal to 0`.
```js
const numberInput = document.getElementById("number-input");
@@ -31,7 +31,7 @@ window.alert = (message) => alertMessage = message; // Override alert and store
numberInput.value = '';
checkUserInput();
assert.strictEqual(alertMessage.trim().replace(/[.,?!]+$/g, '').toLowerCase(), 'please provide a decimal number');
assert.strictEqual(alertMessage.trim().replace(/[.,?!]+$/g, '').toLowerCase(), 'please provide a decimal number greater than or equal to 0');
```
# --seed--
@@ -162,7 +162,11 @@ const convertBtn = document.getElementById("convert-btn");
const result = document.getElementById("result");
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
--fcc-editable-region--
--fcc-editable-region--

12
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644760f4fb15ce765baebb62.md
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@@ -16,7 +16,7 @@ Add the `return` keyword after `alert()`.
You should use the `return` keyword after `alert()`.
```js
assert.match(String(checkUserInput), /if\s*\(\s*.+\s*\)\s*\{\s*(window\s*.)?\s*alert\(\s*('|"|`)please provide a decimal number\2\s*\)\s*;?\s*return\s*;?\s*\}/i);
assert.match(String(checkUserInput), /if\s*\(\s*.+\s*\)\s*\{\s*(window\s*.)?\s*alert\(\s*('|"|`)please provide a decimal number greater than or equal to 0\2\s*\)\s*;?\s*return\s*;?\s*\}/i);
```
# --seed--
@@ -147,10 +147,14 @@ const convertBtn = document.getElementById("convert-btn");
const result = document.getElementById("result");
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
--fcc-editable-region--
alert("Please provide a decimal number");
alert("Please provide a decimal number greater than or equal to 0");
--fcc-editable-region--
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6448ab52a902de04fc56b3fa.md
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@@ -163,8 +163,12 @@ const result = document.getElementById("result");
--fcc-editable-region--
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6448b2c9aec64c0ecd41573d.md
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@@ -161,8 +161,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6448b4107aadc110a6ab4f65.md
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@@ -163,8 +163,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644a0eadcbccaf1d13c7d137.md
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@@ -184,8 +184,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644a2013b2ceea32c44d09f9.md
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@@ -176,8 +176,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644a37d773b7610ac5ede66e.md
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@@ -191,8 +191,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b6a23d398bb5f05ef796b.md
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@@ -176,8 +176,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b6ad4fa8dfd600a9dff2c.md
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@@ -173,8 +173,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b71f678b5e1687666c88d.md
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@@ -161,8 +161,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b765b3bf09e6dff5e0931.md
View File

@@ -161,8 +161,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b77a563c51f6ff5237b99.md
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@@ -174,8 +174,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b7ac994d7dd73a61b4fa6.md
View File

@@ -167,8 +167,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/644b82e0dc8e5e7ca47fcd9b.md
View File

@@ -163,8 +163,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b5c05986aba539ba6ca03.md
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@@ -155,8 +155,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b65b681a62f5fa125ff62.md
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@@ -180,8 +180,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b6693d8e1bf60f2d92e67.md
View File

@@ -167,8 +167,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b6c92876e836832538e34.md
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@@ -172,8 +172,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b6dad50514e69df601df6.md
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@@ -194,8 +194,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b7f6a575ffc807877a8c6.md
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@@ -185,8 +185,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

9
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b9d56b48971997a8055dd.md
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@@ -157,7 +157,6 @@ const decimalToBinary = (input) => {
--fcc-editable-region--
if (input === 0) {
}
--fcc-editable-region--
@@ -179,8 +178,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b9de38df75b9a5cfc2e85.md
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@@ -196,8 +196,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645b9ea45d3a9a9d711df81a.md
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@@ -151,8 +151,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c803cad8434791a5f57b6.md
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@@ -159,8 +159,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c80ee8b65917a24afcb14.md
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@@ -163,8 +163,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c81579c54a57ae7c1a5f7.md
View File

@@ -173,8 +173,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c81683d816b7b3a044143.md
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@@ -168,8 +168,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c82268b9a8d7c4debd8dc.md
View File

@@ -158,8 +158,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c85251dc1827fe4a6c4ce.md
View File

@@ -158,8 +158,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c86f92a102d82250ce3e8.md
View File

@@ -168,8 +168,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c8a55eca2118650ee3ce3.md
View File

@@ -172,8 +172,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c8fe0c9505407650c4ac6.md
View File

@@ -178,8 +178,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645c9e6cf5c7251f7b3308f6.md
View File

@@ -178,8 +178,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ca158fb7fa3237437fbbd.md
View File

@@ -169,8 +169,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

9
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ca381c8f87f263034954f.md
View File

@@ -164,7 +164,6 @@ const countdown = (number) => {
if (number === 0) {
return;
} else {
}
--fcc-editable-region--
};
@@ -185,8 +184,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ca5ca11d0d7293e61c6c7.md
View File

@@ -174,8 +174,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ca62092c53f29f4ea9bf6.md
View File

@@ -194,8 +194,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cb07132281a380223e458.md
View File

@@ -176,8 +176,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cb0ce6dc93738b442b0d0.md
View File

@@ -186,8 +186,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cb1306eb27a397be7f18c.md
View File

@@ -175,8 +175,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cb99035b8f046f1d669e4.md
View File

@@ -188,8 +188,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cbad5f77ce948b35cf83e.md
View File

@@ -176,8 +176,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cbb5ab1296e49946adb6e.md
View File

@@ -191,8 +191,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cc5925f158b5b33e2698f.md
View File

@@ -191,8 +191,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ccf7ec9aca267d84b053e.md
View File

@@ -194,8 +194,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd17b061afb6a8cba945a.md
View File

@@ -193,8 +193,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd267410ac06bfcaf0bd4.md
View File

@@ -196,8 +196,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd2b76488fd6cb8d1ae79.md
View File

@@ -193,8 +193,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd4eb6edf6e6f91acabbb.md
View File

@@ -191,8 +191,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd5b506ed8970b7ea953d.md
View File

@@ -182,8 +182,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd65c33bdc871bb72def4.md
View File

@@ -196,8 +196,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645cd8b7f4d8e27526694448.md
View File

@@ -178,8 +178,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ce315efe609814258b0bc.md
View File

@@ -162,8 +162,12 @@ const decimalToBinary = (input) => {
--fcc-editable-region--
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ce3c80f1c29824f1a8359.md
View File

@@ -161,8 +161,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/645ce4375221138326895726.md
View File

@@ -165,8 +165,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6461f79f4ea2ef042fb2c0f4.md
View File

@@ -165,8 +165,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6461fd4c1bc6620aed6435b2.md
View File

@@ -165,8 +165,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64620068f97fe70ea47a9e75.md
View File

@@ -159,8 +159,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646203cdc054d012b5d71428.md
View File

@@ -173,8 +173,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6462060b0a8a2c15726649ec.md
View File

@@ -180,8 +180,12 @@ const decimalToBinary = (input) => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64620800e0c6ab17f0e31d6d.md
View File

@@ -167,8 +167,12 @@ const decimalToBinary = (input) => {
--fcc-editable-region--
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646463be7341819690797ad2.md
View File

@@ -177,8 +177,12 @@ const showAnimation = () => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464650a962e3d9852713549.md
View File

@@ -163,8 +163,12 @@ const showAnimation = () => {
};
const checkUserInput = () => {
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64646577f28ade99100a55c3.md
View File

@@ -177,8 +177,12 @@ const checkUserInput = () => {
--fcc-editable-region--
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

14
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646467130d7acc9b4e565c42.md
View File

@@ -11,16 +11,16 @@ Replace all instances of `parseInt(numberInput.value)` with `inputInt`.
# --hints--
You should replace `isNaN(parseInt(numberInput.value))` with `isNaN(inputInt)`.
You should replace `isNaN(parseInt(numberInput.value))` with `isNaN(inputInt)` and `parseInt(numberInput.value) < 0` with `inputInt < 0`.
```js
assert.notMatch(
String(checkUserInput),
/isNaN\(\s*parseInt\(\s*numberInput\s*\.\s*value\s*\)\s*\)/
/isNaN\(\s*parseInt\(\s*numberInput\s*\.\s*value\s*\)\s*\)\s*\|\|s*\(\s*parseInt\(\s*numberInput\s*\.\s*value\s*\)\s*\<\s*0/
);
assert.match(
String(checkUserInput),
/isNaN\(\s*inputInt\s*\)/
/isNaN\(\s*inputInt\s*\)\s*\|\|\s*inputInt\s*\<\s*0/
);
```
@@ -202,8 +202,12 @@ const checkUserInput = () => {
--fcc-editable-region--
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(parseInt(numberInput.value))) {
alert("Please provide a decimal number");
if (
!numberInput.value ||
isNaN(parseInt(numberInput.value)) ||
parseInt(numberInput.value) < 0
) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646467683f25e19bfc9cf9b0.md
View File

@@ -175,8 +175,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64646bc0e5a60ea131e03f91.md
View File

@@ -193,8 +193,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64646db2c684b7a3a174a1d0.md
View File

@@ -199,8 +199,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646477c82475ffaf0c3c0771.md
View File

@@ -199,8 +199,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64647cf70a4556b5105e65b2.md
View File

@@ -179,8 +179,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64648534ff5498bee5dceb28.md
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@@ -230,8 +230,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646486adf52652c0ee103aab.md
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@@ -220,8 +220,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64648963e014f8c42a65b83a.md
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@@ -223,8 +223,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64648c3703ad2ec796ab8d1e.md
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@@ -193,8 +193,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64648cf52e1ce1c8c00956ae.md
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@@ -190,8 +190,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464905afec9efcf7328ce58.md
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@@ -193,8 +193,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646491d2c856afd17c2f380d.md
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@@ -203,8 +203,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

6
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646492f5c672c9d32f340c22.md
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@@ -7,7 +7,7 @@ dashedName: step-92
# --description--
Then, use the compound assignment operator (`+=`) to set the `innerHTML` property of the `animationContainer` to an empty template literal string.
Then, use the compound assignment operator (`+=`) to set the `innerHTML` property of the `animationContainer` to an empty template literal string.
# --hints--
@@ -185,8 +185,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/646493b7dc53b5d45c9c50fc.md
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@@ -195,8 +195,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64649b243b9cc3ddabacc593.md
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@@ -197,8 +197,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64649c6d77059edf80279a32.md
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@@ -190,8 +190,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64649d2459ad94e0a772fc3f.md
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@@ -201,8 +201,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64649efb555939e30462c79b.md
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@@ -199,8 +199,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/64649f91446721e3ff391d88.md
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@@ -192,8 +192,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

6
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464a057702d04e537d56d49.md
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@@ -13,8 +13,6 @@ Add the property `msg` to the animation object at the top of the stack, and set
# --hints--
You should add the property `msg` to the animation object at the top of the stack.
```js
@@ -206,8 +204,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464a6d98c43acecb8a7867b.md
View File

@@ -208,8 +208,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464a9f7d81939f08d04f435.md
View File

@@ -222,8 +222,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464aabd17cd45f1d17cfe56.md
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@@ -248,8 +248,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464ab8c06ea92f30bc548d5.md
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@@ -251,8 +251,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464abfb6cf778f3cb33d379.md
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@@ -223,8 +223,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464ad3c9b2e6cf58224cfa9.md
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@@ -207,8 +207,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464b1384318a5087190950a.md
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@@ -216,8 +216,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464b25851863b0a119eb7b1.md
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@@ -227,8 +227,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464b3adeee9310bd37ff636.md
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@@ -220,8 +220,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

4
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464b8ccb1a5d612c2f857d1.md
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@@ -233,8 +233,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}

8
curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-recursion-by-building-a-decimal-to-binary-converter/6464c6d6698a8027f8c9d6be.md
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@@ -215,8 +215,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}
@@ -427,8 +427,8 @@ const showAnimation = () => {
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt)) {
alert("Please provide a decimal number");
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}