---
id: 6464a057702d04e537d56d49
title: Step 98
challengeType: 0
dashedName: step-98
---
# --description--
Now it's time to set up for the next phase of the animation where you'll update and remove the paragraphs you append to the DOM during the animation.
Add the property `msg` to the animation object at the top of the stack, and set its value to an empty string.
# --hints--
You should add the property `msg` to the animation object at the top of the stack.
```js
assert.property(
animationData[2],
'msg',
)
```
You should set the value of the `msg` property to an empty string.
```js
assert.propertyVal(
animationData[2],
'msg',
''
)
```
# --seed--
## --seed-contents--
```html
Decimal to Binary Converter
Decimal to Binary Converter
Enter a decimal number:
Convert
```
```css
*,
*::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;
}
}
```
```js
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 = [
{
inputVal: 5,
marginTop: 300,
addElDelay: 1000
},
{
inputVal: 2,
marginTop: -200,
addElDelay: 1500
},
--fcc-editable-region--
{
inputVal: 1,
marginTop: -200,
addElDelay: 2000
}
--fcc-editable-region--
];
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 += `
decimalToBinary(${obj.inputVal})
`;
}, 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();
}
});
```