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HTML onblur Event Attribute

❮ HTML Event Attributes


Validate an input field when the user leaves it:

<input type="text" name="fname" id="fname" onblur="myFunction()">
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More "Try it Yourself" examples below.

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.

Browser Support

Event Attribute
onblur Yes Yes Yes Yes Yes


<element onblur="script">

Attribute Values

Value Description
script The script to be run on onblur

Technical Details

Supported HTML tags: All HTML elements, EXCEPT: <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title>

More Examples


Using "onblur" together with the "onfocus" attribute:

<input type="text" onfocus="focusFunction()" onblur="blurFunction()">
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Related Pages

HTML DOM reference: onblur event

❮ HTML Event Attributes