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HTML onblur Event Attribute

HTML Event Attributes HTML Event Attributes

Example

Validate an input field when the user leaves it:

<input type="text" name="fname" id="fname" onblur="upperCase()">

Try it yourself »

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The onblur event attribute is supported in all major browsers.


Definition and Usage

The onblur attribute fires the moment that the element loses focus.

Onblur is most often used with form validation code (e.g. when the user leaves a form field).

Tip: The onblur attribute is the opposite of the onfocus attribute.


Differences Between HTML 4.01 and HTML5

None.


Syntax

<element onblur="script">

Attribute Values

Value Description
script The script to be run on onblur


HTML Event Attributes HTML Event Attributes

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