HTML oninput Event Attribute

The HTML oninput event attribute is triggered when the user enters input in an input/textarea HTML element in an HTML document.


Following is the syntax −

<tagname oninput=”script”></tagname>


Let us see an example of HTML on input event Attribute −

<!DOCTYPE html>
   body {
      color: #000;
      height: 100vh;
      background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;
      text-align: center;
      padding: 20px;
   textarea {
      border: 2px solid #fff;
      background: transparent;
      font-size: 1rem;
   ::placeholder {
      color: #000;
      font-size: 1rem;
<h1>HTML oninput Event Attribute Demo</h1>
<textarea placeholder="Enter your message here" oninput="inputFn()" rows='8' cols="50"></textarea>
   function inputFn() {
      document.querySelector('textarea').style.background = '#ffffff36';


Now enter your message in the text area to observe how oninput event attribute works.