GlobalEventHandlers.onsubmit

The onsubmit property of the GlobalEventHandlers mixin is an event handler that processes submit events.

The submit event fires when the user submits a form.

Syntax

target.onsubmit = functionRef;

Value

functionRef is a function name or a function expression. The function receives a SubmitEvent object as its sole argument.

Example

This example demonstrates oninvalid and onsubmit event handlers on a form.

HTML

<form id="form">
  <p id="error" hidden>Please fill out all fields.</p>

  <label for="city">City</label>
  <input type="text" id="city" required>

  <button type="submit">Submit</button>
</form>
<p id="thanks" hidden>Your data has been received. Thanks!</p>

JavaScript

const form = document.getElementById('form');
const error = document.getElementById('error');
const city = document.getElementById('city');
const thanks = document.getElementById('thanks');

city.oninvalid = invalid;
form.onsubmit = submit;

function invalid(event) {
  error.removeAttribute('hidden');
}

function submit(event) {
  form.setAttribute('hidden', '');
  thanks.removeAttribute('hidden');

  // For this example, don't actually submit the form
  event.preventDefault();
}

Result

Specifications

Specification
HTML Standard (HTML) # handler-onsubmit

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`onsubmit`	1	12	9	9	≤12.1	1	1	18	9	≤12.1	1	1.0