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You cannot rely on Java Script to avoid this security problem. You can also download this demo and check out the source as we go through this tutorial.Download Demo Source Our form contains two types of validation. Valid inputs will turn green while invalid inputs will turn red.However, if Java Script is turned on, our validation will solve any problems before the browser sees them.

Java Script form validation is a great way to help your users avoid mistakes when filling out a form Alternatively, if you want to protect your server from malicious users, then you should use server side validation because Java Script can be easily bypassed.Similarly, form data is typically saved in a database on the server.Because your database contains sensitive information, hackers may attempt to use your form to submit malicious commands to your backend database.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.

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