Validating text area
Therefore, we'll create CSS classes to represent these possible outcomes.
Now that we've created a working form, we need to add some j Query and Java Script to validate fields and change the CSS classes that were created earlier.
To avoid this problem, you must validate form submissions using your server.
In client side validation the data is validated in the browser using Java Script before submitting the data to the server.
For example, suppose your user submits the form without entering a mandatory field.
This will place a green border around the input box.
The full code looks like this: The same approach can be used to validate the email address.For example, suppose you wanted to validate a credit card.