HTML onsubmit Event Attribute

The HTML onsubmit event attribute is triggered when the form is submitted in an HTML document.


Following is the syntax −

<tagname onsubmit=”script”></tagname>

Let us see an example of HTML onsubmit event Attribute −


 Live Demo

<!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;
   .btn {
      background: #db133a;
      border: none;
      height: 2rem;
      border-radius: 2px;
      width: 40%;
      display: block;
      color: #fff;
      outline: none;
      cursor: pointer;
      margin: 1rem auto;
<h1>HTML onsubmit Event Attribute Demo</h1>
<form onsubmit="submitFn()">
<textarea placeholder="Enter your message here" onreset="resetFn()" rows='8' cols="50"></textarea>
<input type="submit" value="SUBMIT" class="btn">
<div class="show"></div>
   function submitFn() {
      confirm("Form was submitted");


Click on “SUBMIT” button to observe how onsubmit event attribute works -