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When the submit button is pushed, j Query will check whether all fields are valid.If any fields are not valid, the form will not be submitted and the user will be informed with error messages for the fields that are causing problems.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.Finally, notice that instead of using "text" as the input type for the email and url fields, we use "email" and "url".

For example, suppose your user submits the form without entering a mandatory field.These error message will only be displayed after the form is submitted.We also want to implement real-time validation where the color of the input will change based on the validity of the data that has been entered.If you are using a My SQL database, this is called My SQL Injection.To avoid this problem, you must validate form submissions using your server.

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