Javascript for validating registration form

28-Feb-2020 05:42

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The Java Script class presented here makes the form validations many times easier.

The script has a catalog of almost all the common validation types built-in.

For more information beyond this tutorial, see the Constraint validation guide. When you enter data, the web application checks it to see that the data is correct.

If the information is correct, the application allows the data to be submitted to the server and (usually) saved in a database; if the information isn't correct, it gives you an error message explaining what needs to be corrected.

Form validation helps us to ensure that users fill out forms in the correct format, making sure that submitted data will work successfully with our applications.

This article leads you through basic concepts and examples about form validation.

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The drop down select list boxes usually will have one item saying ‘Select One’ (and that item will be selected by default).

The user should select an option other than this ‘Select One’ item.

There are many more rules but let's leave it at these basic rules.

Form validation can be implemented in a number of different ways.

We want to make filling out web forms as easy as possible. There are three main reasons: In the real world, developers tend to use a combination of client-side and server-side validation.Form validation normally used to occur at the server, after the client had entered all the necessary data and then pressed the Submit button.

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