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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <html>
    <head>
        <title>JS debounce</title>
        <link href="https://fonts.googleapis.com/css2?family=Jua&family=Roboto:[email protected]&display=swap" rel="stylesheet"> 
        <link rel="stylesheet" href="./assets/css/main.css">
    </head>
    <body>
        <main>
            <div class="card blue">
                <h1>JS debounce</h1>
                <input type="text" onkeyup="processChanges()" />
                <button onclick="processChanges()">Click me</button>
            </div>
        </main>
    </body>
</html>
!

CSS 

              
                /* layout relevant styles */
html, body
    width: 100%
    height: 100%
    margin: 0
  
main
    display: grid
    height: 100%
    grid-template-columns: auto 33% auto
    grid-template-rows: auto auto auto
  
.card
    display: grid
    grid-template-columns: 100%
    grid-column: 2
    grid-row: 2



/* other styles */
.card
    padding: 50px
    color: #fff
    border-radius: 20px
    box-sizing: border-box
    font-family: Roboto, sans-serif
    background: rgb(0,174,239)
    background: linear-gradient(135deg, rgba(0,174,239,1) 20%, rgba(45,56,138,1) 100%)

    h1
        margin: 0 
        font-size: 3rem
        font-weight: lighter
        text-align: center
    
    input
        width: auto
        height: 50px
        border-radius: 25px
        border: 0
        line-height: 50px
        padding: 0 20px
        font-size: 1.5rem
        font-family: Roboto, sans-serif
        outline: none

    button
        width: 240px
        height: 50px
        border-radius: 25px
        border: 2px solid #fff
        line-height: 50px
        text-align: center
        font-size: 1.5rem
        color: #fff
        text-decoration: none
        margin-top: 10px
        position: relative
        box-sizing: border-box
        justify-self: center
        background: transparent
        cursor: pointer
        font-family: Roboto, sans-serif
        outline: none

        &:hover
            background: #ffffff
            color: #000
            &::after
                right: 10px

        &::after
            content: ">"
            font-family: "Jua"
            position: absolute
            right: 15px
            transition: right 1s ease

a, a:hover
    transition: all 0.3s ease
!

JS 

              
                function debounce(func, timeout = 300){
  let timer;
  return (...args) => {
    clearTimeout(timer);
    timer = setTimeout(() => { func.apply(this, args); }, timeout);
  };
}
  
function saveInput(){
  console.log('Saving data');
}

const processChanges = debounce(() => saveInput());
!
999px

Console