Javascript Piano | Piano Using Html Css Javascript - Codewithranom

Javascript Piano | Piano Using Html Css Javascript - Codewithranom  

Welcome🎉 to Code With Random blog. In this blog, we learn how we create a Javascript Piano. We use HTML, Css, and javascript for this Javascript Piano. Hope you enjoy our blog so let's start with a basic HTML structure for a  Javascript Piano.

HTML code

  <section id="wrap">  
    <h1>JS Piano</h1>  
    <h2>Use your keyboard. Hover for hints.</h2>  
   <section id="main">  
    <div class="nowplaying"></div>  
    <div class="keys">  
     <div data-key="65" class="key" data-note="C">  
       <span class="hints">A</span>  
     <div data-key="87" class="key sharp" data-note="C#">  
       <span class="hints">W</span>  
     <div data-key="83" class="key" data-note="D">  
       <span class="hints">S</span>  
     <div data-key="69" class="key sharp" data-note="D#">  
       <span class="hints">E</span>  
     <div data-key="68" class="key" data-note="E">  
       <span class="hints">D</span>  
     <div data-key="70" class="key" data-note="F">  
       <span class="hints">F</span>  
     <div data-key="84" class="key sharp" data-note="F#">  
       <span class="hints">T</span>  
     <div data-key="71" class="key" data-note="G">  
       <span class="hints">G</span>  
     <div data-key="89" class="key sharp" data-note="G#">  
       <span class="hints">Y</span>  
     <div data-key="72" class="key" data-note="A">  
       <span class="hints">H</span>  
     <div data-key="85" class="key sharp" data-note="A#">  
       <span class="hints">U</span>  
     <div data-key="74" class="key" data-note="B">  
       <span class="hints">J</span>  
     <div data-key="75" class="key" data-note="C">  
       <span class="hints">K</span>  
     <div data-key="79" class="key sharp" data-note="C#">  
       <span class="hints">O</span>  
     <div data-key="76" class="key" data-note="D">  
       <span class="hints">L</span>  
     <div data-key="80" class="key sharp" data-note="D#">  
       <span class="hints">P</span>  
     <div data-key="186" class="key" data-note="E">  
       <span class="hints">;</span>  
    <audio data-key="65" src=""></audio>  
    <audio data-key="87" src=""></audio>  
    <audio data-key="83" src=""></audio>  
    <audio data-key="69" src=""></audio>  
    <audio data-key="68" src=""></audio>  
    <audio data-key="70" src=""></audio>  
    <audio data-key="84" src=""></audio>  
    <audio data-key="71" src=""></audio>  
    <audio data-key="89" src=""></audio>  
    <audio data-key="72" src=""></audio>  
    <audio data-key="85" src=""></audio>  
    <audio data-key="74" src=""></audio>  
    <audio data-key="75" src=""></audio>  
    <audio data-key="79" src=""></audio>  
    <audio data-key="76" src=""></audio>  
    <audio data-key="80" src=""></audio>  
    <audio data-key="186" src=""></audio>  
  <video playsinline autoplay muted loop id="bgvid" poster="">  
    <source src="" type="video/mp4">  
There is all HTML code for the Javascript Piano. Now, you can see output without CSS, then we write css & javascript for the javascript Piano.
Javascript Piano | Piano Using Html Css Javascript - Codewithranom

CSS Code

 html {  
     background: #000;  
     font-family: 'Noto Serif', serif;  
     -webkit-font-smoothing: antialiased;  
     text-align: center;  
    video#bgvid {   
     position: fixed;  
     top: 50%;  
     left: 50%;  
     min-width: 100%;  
     min-height: 100%;  
     width: auto;  
     height: auto;  
     z-index: -100;  
     transform: translateX(-50%) translateY(-50%);  
     background-size: cover;   
   header {  
    position: relative;  
    margin: 30px 0;  
   header:after {  
    content: '';  
    width: 460px;  
    height: 15px;  
    background: url(images/intro-div.svg) no-repeat center;  
    display: inline-block;  
    text-align: center;  
    background-size: 70%;  
   h1 {  
    color: #fff;  
    font-size: 50px;  
    font-weight: 400;  
    letter-spacing: 0.18em;  
    text-transform: uppercase;  
    margin: 0;  
   h2 {  
    color: #fff;  
    font-size: 24px;  
    font-style: italic;  
    font-weight: 400;  
    margin: 0 0 30px;  
   .nowplaying {  
    font-size: 120px;  
    line-height: 1;  
    color: #eee;  
    text-shadow: 0 0 5rem #028ae9;  
    transition: all .07s ease;  
    min-height: 120px;  
   .keys {  
    display: block;  
    width: 100%;  
    height: 350px;  
    max-width: 880px;  
    position: relative;  
    margin: 40px auto 0;  
    cursor: none;  
   .key {  
    position: relative;  
    border: 4px solid black;  
    border-radius: .5rem;  
    transition: all .07s ease;  
    display: block;  
    box-sizing: border-box;  
    z-index: 2;  
   .key:not(.sharp) {  
    float: left;  
    width: 10%;  
    height: 100%;  
    background: rgba(255, 255, 255, .8);    
   } {  
    position: absolute;  
    width: 6%;  
    height: 60%;  
    background: #000;  
    color: #eee;  
    top: 0;  
    z-index: 3;  
   .key[data-key="87"] {  
    left: 7%;  
   .key[data-key="69"] {  
    left: 17%;  
   .key[data-key="84"] {  
    left: 37%;  
   .key[data-key="89"] {  
    left: 47%;  
   .key[data-key="85"] {  
    left: 57%;    
   .key[data-key="79"] {  
    left: 77%;    
   .key[data-key="80"] {  
    left: 87%;    
   .playing {  
    transform: scale(.95);  
    border-color: #028ae9;  
    box-shadow: 0 0 1rem #028ae9;  
   .hints {  
    display: block;  
    width: 100%;  
    opacity: 0;  
    position: absolute;  
    bottom: 7px;  
    transition: opacity .3s ease-out;  
    font-size: 20px;  
   .keys:hover .hints {  
    opacity: 1;  

Here is our updated output CSS.

Javascript Piano | Piano Using Html Css Javascript - Codewithranom

Javascript code 

 const keys = document.querySelectorAll(".key"),  
  note = document.querySelector(".nowplaying"),  
  hints = document.querySelectorAll(".hints");  
 function playNote(e) {  
  const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`),  
   key = document.querySelector(`.key[data-key="${e.keyCode}"]`);  
  if (!key) return;  
  const keyNote = key.getAttribute("data-note");  
  note.innerHTML = keyNote;  
  audio.currentTime = 0;;  
 function removeTransition(e) {  
  if (e.propertyName !== "transform") return;  
 function hintsOn(e, index) {  
  e.setAttribute("style", "transition-delay:" + index * 50 + "ms");  
 keys.forEach(key => key.addEventListener("transitionend", removeTransition));  
 window.addEventListener("keydown", playNote);  
Final output
Javascript Piano | Piano Using Html Css Javascript - Codewithranom

Now we have completed our javascript section,  Here is our updated output with javascriptHope you like the Javascript Piano. you can see output video and project screenshots. See our other blogs and gain knowledge in front-end development. Thank you 🙏💕!

In this post, we learn how to create a  Javascript Piano using simple HTML & CSS, and javascript. If we made a mistake or any confusion, please drop a comment to reply or help you in easy learning.

Written by - Code With Random/Anki 

Codepen by - Caroline Gabriel

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