# onfocusin Event

Event Object

## Example

Execute a JavaScript when an input field is about to get focus:

<input type="text" onfocusin="myFunction()">
Try it yourself »

More "Try it Yourself" examples below.

## Definition and Usage

The onfocusin event occurs when an element is about to get focus.

Tip: The onfocusin event is similar to the onfocus event. The main difference is is that the onfocus event does not bubble. Therefore, if you want to find out whether an element or its child gets the focus, you should use the onfocusin event.

Tip: Although Firefox does not support the onfocusin event, you can find out whether a child of an element gets the focus or not, by using a capturing listener for the onfocus event (using the optional useCapture parameter of the addEventListener() method).

Tip: The onfocusin event is the opposite of the onfocusout event.

## Browser Support

Event |  |  |  |  |
--- | --- | --- | --- | --- | ---
onfocusin | Yes | Yes | Not supported | Yes | Yes

Note: The onfocusin event may not work as expected in Chrome, Safari and Opera 15+ using the JavaScript HTML DOM syntax. However, it should work as an HTML attribute and by using the addEventListener() method.

## Syntax

In HTML:

<element onfocusin="myScript">Try it

In JavaScript (may not work as expected in Chrome, Safari and Opera 15+):

object.onfocusin=function(){myScript};Try it

In JavaScript, using the addEventListener() method:

object.addEventListener("focusin", myScript);Try it

Note: The addEventListener() method is not supported in Internet Explorer 8 and earlier versions.

## Technical Details

Bubbles: | Yes
Cancelable: | No
Event type: | FocusEvent
Supported HTML tags: | ALL HTML elements, EXCEPT: <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title>
DOM Version: | Level 2 Events

## More Examples

## Example

Using "onfocusin" together with the "onfocusout" event:

<input type="text" onfocusin="focusFunction()" onfocusout="blurFunction()">
Try it yourself »

## Example

Event delegation: setting the useCapture parameter of addEventListener() to true (for focus and blur):

<form id="myForm">
<input type="text" id="myInput">
</form>
<script>
var x = document.getElementById("myForm");
x.addEventListener("focus", myFocusFunction, true);
x.addEventListener("blur", myBlurFunction, true);
function myFocusFunction() {
document.getElementById("myInput").style.backgroundColor = "yellow";
}
function myBlurFunction() {
document.getElementById("myInput").style.backgroundColor = "";
}
</script>
Try it yourself »

## Example

Event delegation: using the focusin event (not supported by Firefox):

<form id="myForm">
<input type="text" id="myInput">
</form>
<script>
var x = document.getElementById("myForm");
x.addEventListener("focusin", myFocusFunction);
x.addEventListener("focusout", myBlurFunction);
function myFocusFunction() {
document.getElementById("myInput").style.backgroundColor = "yellow";
}
function myBlurFunction() {
document.getElementById("myInput").style.backgroundColor = "";
}
</script>
Try it yourself »

Event Object

### WEB HOSTING

UK Reseller Hosting

### WEB BUILDING

FREE Website BUILDER Free HTML5 Templates

### W3SCHOOLS EXAMS

HTML, CSS, JavaScript, PHP, jQuery, XML, and ASP Certifications

### SHARE THIS PAGE

### Color Picker

### HTML/CSS

HTML Tutorial HTML5 Tutorial CSS Tutorial CSS3 Tutorial Bootstrap Tutorial

### JavaScript

JavaScript Tutorial jQuery Tutorial jQuery Mobile Tutorial AngularJS Tutorial AJAX Tutorial JSON Tutorial

### Graphics

Canvas Tutorial SVG Tutorial Google Maps Tutorial

### Server Side

SQL Tutorial PHP Tutorial ASP Tutorial ASP.NET Tutorial VBScript Tutorial AppML Tutorial

### Web

Web Building Web Statistics Web Certification

### XML

XML Tutorial DTD Tutorial Schema Tutorial XML DOM Tutorial XPath Tutorial XSLT Tutorial XQuery Tutorial XSL-FO Tutorial RSS Tutorial WSDL Tutorial

### HTML/CSS

HTML Tag Reference HTML Event Reference HTML Color Reference CSS 1,2,3 Reference Bootstrap Reference

### JavaScript

JavaScript Reference HTML DOM Reference jQuery Reference jQuery Mobile Reference Google Maps Reference

### Server Side

PHP Reference SQL Reference ASP Reference VBScript Reference Razor Reference ASP.NET Reference

### XML

XML DOM Reference XSLT Reference XSL-FO Reference XPath Reference XQuery Reference Schema Reference RSS Reference SVG Reference

### HTML Charsets

HTML Character Sets HTML ASCII HTML ANSI HTML Windows-1252 HTML ISO-8859-1 HTML Symbols HTML UTF-8

### HTML/CSS

HTML Examples CSS Examples

### Browser Scripting

JavaScript Examples HTML DOM Examples jQuery Examples jQuery Mobile Examples AngularJS Examples AJAX Examples

### Server Scripting

PHP Examples ASP Examples VBScript Examples Razor Examples .NET Examples

### XML Languages

XML Examples DTD Examples XML DOM Examples XSL Examples XSLT Examples XPath Examples XQuery Examples Schema Examples RSS Examples SVG Examples