How to use Form onsubmit in JavaScript

This article describe about Form onsubmit Event in JavaScript.
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Form onsubmit Event

When the submit button in a form is clicked onsubmit event occurs.

Syntax

onsubmit="JavaScriptCode"

 

Parameter Description
JavaScriptCode Required. Specifies a JavaScript to be executed when the event occurs

Example

<!DOCTYPE html>

<html>

<head>

<script type="text/javascript">

    function get() {

        alert("Welcome " + document.forms["frm1"]["fname"].value + "!")

    }

</script>

</head>

<body>

Enter your name?<br />

<form name="frm1" action="usegeting.htm" onsubmit="get()">

<input type="text" name="fname" />

<input type="submit" value="Submit" />

</form>

</body>

</html>

 

Output

 

pic25.jpg

 

Note: After click on the button.

 

pic26.jpg

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