HTML onchange Event Attribute

The HTML onchange attribute is triggered when you change the value of an HTML element in an HTML document.


Following is the syntax −

<tagname onchange=”script”></tagname>


Let us see an example of HTML onchange event Attribute −

Live Demo

<!DOCTYPE html>
   body {
      color: #000;
      height: 100vh;
      background-color: #FBAB7E;
      background-image: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%);
      text-align: center;
      padding: 20px;
   .show {
      font-size: 1.1rem;
      margin: 1rem auto;
   select {
      height: 2rem;
      width: 30%;
      font-size: 1rem;
      background: transparent;
      border: 2px solid #fff;
      outline: none;
<h1>HTML onchange Event Attribute Demo</h1>
<p>Select your favourite subject:</p>
<select onchange="get()">
<div class="show"></div>
   function get() {
      var msg = document.querySelector('.show');
      msg.innerHTML = "Current Value is " + document.querySelector("select").value;


Now change the value of drop-drown list to observe how onchange event triggered.

Updated on: 16-Feb-2021


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