Using JavaScript to Verify Form Input

Page content

Web-form validation using JavaScript

One of the most efficient methods to validate or verify the user input in web forms is by using client side JavaScript. Suppose you have a web form containing three text fields - Name, Email and Phone Number and two buttons – Submit and Reset. The user fills up all the required fields, and now it is your turn to verify the form input. However, in cases when there are too many fields in the form, this JavaScript verification becomes complex.

See the following JavaScript source code for verifying the above form.

Press the submit button to verify form data.

method="POST” onsubmit="return VerifyData()“>

Your name:

Your email:

Your phone number:

Wrapping up altogether

Press the submit button to verify form data.

Your name:

Your email:

Your phone number: