HTML onclick Event Attribute

The HTML onclick attribute is triggered when you mouse click on an HTML element in an HTML document.


Following is the syntax −

<tagname onclick=”script”></tagname>


Let us see an example of HTML onclick event Attribute −

Live Demo

<!DOCTYPE html>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
   body {
      color: #000;
      height: 100vh;
      background-color: #FBAB7E;
      background-image: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%);
      text-align: center;
      padding: 20px;
   .btn {
      background: #db133a;
      border: none;
      height: 2rem;
      border-radius: 2px;
      width: 40%;
      display: block;
      color: #fff;
      outline: none;
      cursor: pointer;
      margin: 1rem auto;
   .show {
      font-size: 1.2rem;
<h1>HTML onclick Event Attribute Demo</h1>
<button class="btn" onclick='clickFn()'>Click me</button>
<div class="show"></div>
   function clickFn() {
      var msg = document.querySelector('.show');
      msg.innerHTML = "";
      msg.innerHTML = "Hey! you clicked me";


Click on “Click me” button to triggered mouse click event on it.

Updated on: 16-Feb-2021


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