Web/API/Element/blur event

The blur event fires when an element has lost focus. The main difference between this event and focusout is that focusout [[../../../../Learn/JavaScript/Building_blocks/Events#Event_bubbling_and_capture|bubbles]] while blur does not.

The opposite of blur is focus.

Bubbles	No
Cancelable	No
Interface	FocusEvent
Event handler property	onblur
Sync / Async	Sync
Composed	Yes

Examples

Simple example

HTML

<form id="form">
  <input type="text" placeholder="text input">
  <input type="password" placeholder="password">
</form>

JavaScript

const password = document.querySelector('input[type="password"]');

password.addEventListener('focus', (event) => {
  event.target.style.background = 'pink';    
});

password.addEventListener('blur', (event) => {
  event.target.style.background = '';    
});

Event delegation

There are two ways of implementing event delegation for this event: by using the focusout event, or by setting the useCapture parameter of addEventListener() to true.

HTML

<form id="form">
  <input type="text" placeholder="text input">
  <input type="password" placeholder="password">
</form>

JavaScript

const form = document.getElementById('form');

form.addEventListener('focus', (event) => {
  event.target.style.background = 'pink';    
}, true);

form.addEventListener('blur', (event) => {
  event.target.style.background = '';    
}, true);

Specifications

Specification	Status	Comment
UI Events	Working Draft	Added info that this event is composed.
Document Object Model (DOM) Level 3 Events Specification	Obsolete	Initial definition

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
blur event	Chrome Full support 1	Edge Full support 12	Firefox Full support 24 Full support 24 No support 6 — 24 Notes' Notes' The interface for this event is Event, not FocusEvent.	IE Full support 9	Opera Full support 11.6	Safari Full support 3.1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 24 Full support 24 No support 6 — 24 Notes' Notes' The interface for this event is Event, not FocusEvent.	Opera Android Full support 12.1	Safari iOS Full support 2	Samsung Internet Android Full support 1.0

Legend

Full support  

Full support

See implementation notes.'

See implementation notes.

The value of Document.activeElement varies across browsers while this event is being handled (bug 452307): IE10 sets it to the element that the focus will move to, while Firefox and Chrome often set it to the body of the document.

See also

• Related events: focus, focusin, focusout
• This event on Window targets: blur event

Element: blur event by Mozilla Contributors is licensed under CC-BY-SA 2.5.