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5.5 KiB
5.5 KiB
id, title, challengeType, dashedName
| id | title | challengeType | dashedName |
|---|---|---|---|
| 6464ab8c06ea92f30bc548d5 | Step 102 | 0 | step-102 |
--description--
For the last animation object, add the property msg set to the following string:
decimalToBinary(5) returns "10" + 1 (5 % 2). Then it pops off the stack.
Also, add the property showMsgDelay set to 15000 and the property removeElDelay set to 20000.
--hints--
You should add the property msg to the animation object at the bottom of the stack.
assert.property(
animationData[0],
'msg',
)
You should set the value of the msg property to decimalToBinary(5) returns "10" + 1 (5 % 2). Then it pops off the stack.
assert.match(
animationData[0].msg,
/decimalToBinary\s*\(\s*5\s*\)\s*returns\s*('|"|`)10\s*\1\s*\+\s*1\s*\(\s*5\s*%\s*2\s*\)\s*\.\s*Then\s+it\s+pops\s+off\s+the\s+stack\.?/i
);
You should add the property showMsgDelay to the animation object at the bottom of the stack.
assert.property(
animationData[0],
'showMsgDelay',
)
You should set the value of the showMsgDelay property to 15000.
assert.propertyVal(
animationData[0],
'showMsgDelay',
15000
)
You should add the property removeElDelay to the animation object at the bottom of the stack.
assert.property(
animationData[0],
'removeElDelay',
)
You should set the value of the removeElDelay property to 20000.
assert.propertyVal(
animationData[0],
'removeElDelay',
20000
)
--seed--
--seed-contents--
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Decimal to Binary Converter</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<h1>Decimal to Binary Converter</h1>
<div class="input-container">
<label for="number-input">Enter a decimal number:</label>
<input
value=""
type="number"
name="decimal number input"
id="number-input"
class="number-input"
/>
<button class="convert-btn" id="convert-btn">Convert</button>
</div>
<output id="result" for="number-input"></output>
<div id="animation-container"></div>
<script src="script.js"></script>
</body>
</html>
*,
*::before,
*::after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
:root {
--light-grey: #f5f6f7;
--dark-blue: #1b1b32;
--orange: #f1be32;
}
body {
background-color: var(--dark-blue);
font-family: "Times New Roman", Times, serif;
font-size: 18px;
color: var(--light-grey);
padding: 0 15px;
display: flex;
flex-direction: column;
align-items: center;
}
h1 {
text-align: center;
font-size: 2.3rem;
margin: 20px 0;
}
.input-container {
margin: 10px 0;
display: flex;
flex-direction: column;
gap: 10px;
justify-content: center;
align-items: center;
}
.convert-btn {
background-color: var(--orange);
cursor: pointer;
border: none;
padding: 4px;
}
.number-input {
height: 25px;
}
#result {
margin: 10px 0;
min-width: 200px;
width: fit-content;
min-height: 80px;
word-break: break-word;
padding: 15px;
border: 5px solid var(--orange);
font-size: 2rem;
text-align: center;
}
#animation-container {
margin: auto;
max-width: 300px;
}
.animation-frame {
margin: 250px auto 0;
padding: 15px 10px;
border: 5px solid var(--orange);
font-size: 1.2rem;
text-align: center;
}
@media screen and (min-width: 500px) {
.input-container {
flex-direction: row;
}
#result {
max-width: 460px;
}
}
const numberInput = document.getElementById("number-input");
const convertBtn = document.getElementById("convert-btn");
const result = document.getElementById("result");
const animationContainer = document.getElementById("animation-container");
const animationData = [
--fcc-editable-region--
{
inputVal: 5,
marginTop: 300,
addElDelay: 1000
},
--fcc-editable-region--
{
inputVal: 2,
marginTop: -200,
addElDelay: 1500,
msg: 'decimalToBinary(2) returns "1" + 0 (2 % 2) and gives that value to the stack below. Then it pops off the stack.',
showMsgDelay: 10000,
removeElDelay: 15000,
},
{
inputVal: 1,
marginTop: -200,
addElDelay: 2000,
msg: 'decimalToBinary(1) returns "1" (base case) and gives that value to the stack below. Then it pops off the stack.',
showMsgDelay: 5000,
removeElDelay: 10000,
}
];
const decimalToBinary = (input) => {
if (input === 0 || input === 1) {
return String(input);
} else {
return decimalToBinary(Math.floor(input / 2)) + (input % 2);
}
};
const showAnimation = () => {
result.innerText = "Call Stack Animation";
animationData.forEach((obj) => {
setTimeout(() => {
animationContainer.innerHTML += `
<p id="${obj.inputVal}" style="margin-top: ${obj.marginTop}px;" class="animation-frame">
decimalToBinary(${obj.inputVal})
</p>
`;
}, obj.addElDelay);
});
};
const checkUserInput = () => {
const inputInt = parseInt(numberInput.value);
if (!numberInput.value || isNaN(inputInt) || inputInt < 0) {
alert("Please provide a decimal number greater than or equal to 0");
return;
}
if (inputInt === 5) {
showAnimation();
return;
}
result.textContent = decimalToBinary(inputInt);
numberInput.value = "";
};
convertBtn.addEventListener("click", checkUserInput);
numberInput.addEventListener("keydown", (e) => {
if (e.key === "Enter") {
checkUserInput();
}
});