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HTML oninvalid Event Attribute

HTML Event Attributes HTML Event Attributes

Example

Execute a JavaScript when an input field is invalid:

<input type="text" oninvalid="alert('You must fill out the form!');" required>
Try it yourself »

More "Try it Yourself" examples below.


Definition and Usage

The oninvalid event occurs when a submittable <input> element is invalid.

For example, the input field is invalid if the required attribute is set and the field is empty (the required attribute specifies that the input field must be filled out before submitting the form).


Browser Support

The numbers in the table specify the first browser version that fully supports the event attribute.

Event Attribute
oninvalid Yes 10.0 Yes Not supported Yes

Differences Between HTML 4.01 and HTML5

None.


Syntax

<element oninvalid="script">

Attribute Values

Value Description
script The script to be run on oninvalid

Technical Details

Supported HTML tags: <input>

Examples

More Examples

Example

Execute a JavaScript when an input field is invalid:

<input type="text" oninvalid="alert('Must contain 6 or more characters');" pattern=".{6,}">
Try it yourself »

Related Pages

HTML DOM reference: oninvalid event


HTML Event Attributes HTML Event Attributes