How to call a JavaScript function from an onsubmit event?

The onsubmit event occurs when you try to submit a form. You can put your form validation against this event type. The following example shows how to use onsubmit. Here, we are calling a validate() function before submitting a form data to the webserver. If validate() function returns true, the form will be submitted, otherwise it will not submit the data.

<script>
   <!--
      function validation() {
         all validation goes here
         .........
         return either true or false
      }
   //-->
</script>

The HTML

<form method="POST" action="new.cgi" onsubmit="return validate()">
   .......
   <input type="submit" value="Submit" />
</form>

usharani

Updated on: 16-Jun-2020

2K+ Views

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