HTML onsubmit Event Attribute HTML Reference

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Example Execute a JavaScript when a form is submitted: <form action="my_form.php" onsubmit="checkForm()">

Browser Support

1. Definition and Usage

The onsubmit attribute fires when a form is submitted.

The onsubmit attribute is only used within: <form>.

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2. Differences Between HTML 4.01 and HTML5

None.

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3. Syntax

<element onsubmit="script">

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4. Attribute Values

Value	Description
script	The script to be run on onsubmit