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(16 printed pages) Introduction Getting Started Writing the Validation Script Connecting the Form to the Script Associating Form Fields with Custom Script Code Listing Conclusion When you create forms, providing form validation is useful to ensure that your customers enter valid and complete data.For example, you may want to ensure that someone inserts a valid e-mail address into a text box, or perhaps you want to ensure that someone fills in certain fields.Sending data back and forth between the client and server can cause some delays.However, for some form functions, server-side validation is necessary.Server-side validation incorporates code validation into a form handler. NET application on the server that provides the functionality that your form needs for processing after a customer has submitted it.
You will see how to validate various fields used in general, like text, list, checkbox, radio button and we will also see how to retain POST data, so that after the user submits the form, even if the data supplied is not valid, data is not lost.
You may print some message after sending mail optionally.
Please refer to integration specs for examples Sometimes we want to have multiple fields behave as a single field for validation purposes.
Live Demo Following is a live demo of the PHP form we will create by the end of this tutorial.
states that after submission form data will be handled by the PHP script present in this file only.
After installing the dependencies with npm, run to run all the tests with Phantom JS.