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When we convert simple HTML pages into interactive applications, we need to get user input to be processed at the server side. A particular example is gmail, where user inputs its ID and password to access the gmail mail system.

Forms:

The data to a server-side program from a web page is supplied using an HTML form. The idea behind an HTML form is the same as that of a normal paper form. User is presented with a number of fields to input data.

A form contains many different types of input elements that allow the user to enter information. These input elements contain text fields, text area, drop-downs, radio buttons and check boxes etc. They are combined together inside <form> and </form> tags. The values of all the input elements are submitted to the server-side program whose URL is given in the action attribute of the <form> tag..

<form action="ServerSideProgram">Form elements go here

</form>

When submitted, the browser will direct the user data to ServerSideProgram. A single web page can have any number of forms on it.

In the coming lessons you will learn about differnt form elements.


Next >>> Lesson No. 31: Text Box and Text Area







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