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What is HTML onsubmit Event Attribute
The HTML onsubmit event attribute is an event handler that is triggered when an HTML form is submitted. This event fires on the <form> element itself, not on the submit button or input that initiates the submission.
 

Example of HTML onsubmit Event Attribute

It will Execute a JavaScript when a form is submitted.
index.html
Example: HTML
 <form onsubmit="myFunction()">
  Enter name: <input type="text">
  <input type="submit">
</form> 

Output should be:

Example of HTML onsubmit Event Attribute

Definition and Usage of HTML onsubmit Event Attribute

The onsubmit attribute fires when a form is submitted.

Browser Support of HTML onsubmit Event Attribute

Browser Support of HTML onsubmit Event Attribute

Syntax of HTML onsubmit Event Attribute

<form onsubmit="script">

Attribute Values of HTML onsubmit Event Attribute

Value Description
script The script to be run on onsubmit

Technical Details of HTML onsubmit Event Attribute

Supported HTML tags: <form>

How to Execute a JavaScript when a form is submitted

When you submit the form, a function is triggered which alerts some text.

index.html
Example: HTML
<!DOCTYPE html>
<html>
<body>

<p>When you submit the form, a function is triggered which alerts some text.</p>

<form action="/action_page.php" onsubmit="myFunction()">
  Enter name: <input type="text" name="fname">
  <input type="submit" value="Submit">
</form>

<script>
function myFunction() {
  alert("The form was submitted");
}
</script>

</body>
</html>

Output should be:

How to Execute a JavaScript when a form is submitted




html event attributes

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Single Articles
Example of HTML onsubmit Event AttributeForm Events Attribute
Definition and Usage of HTML onsubmit Event AttributeForm Events Attribute
Browser Support of HTML onsubmit Event AttributeForm Events Attribute
Syntax of HTML onsubmit Event AttributeForm Events Attribute
Attribute Values of HTML onsubmit Event AttributeForm Events Attribute
Technical Details of HTML onsubmit Event AttributeForm Events Attribute
How to Execute a JavaScript when a form is submittedForm Events Attribute

Read Full:
Form Events Attribute
Type:
Develop
Category:
Web Tutorial
Sub Category:
Form Events Attribute
Uploaded by:
Admin
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Reffered: https://www.w3schools.com/tags/ev_onsubmit.asp