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CSS VALIDATION CHECK HOW TO
To understand what client-side form validation is, why it's important,Īnd how to apply various techniques to implement it.Ĭlient-side validation is an initial check and an important feature of good user experience by catching invalid data on the client-side, the user can fix it straight away. Prerequisites:Ĭomputer literacy, a reasonable understanding of This article leads you through basic concepts and examples of client-side form validation. This is called client-side form validation, and helps ensure data submitted matches the requirements set forth in the various form controls. Before submitting data to the server, it is important to ensure all required form controls are filled out, in the correct format.