Why are hidden fields used?

Posted by Pavan Reddy on Stack Overflow See other posts from Stack Overflow or by Pavan Reddy
Published on 2010-05-21T11:35:19Z Indexed on 2010/05/21 11:40 UTC
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I have always seen a lot of hidden fields used in web applications. I have worked with code which is written to use a lot of hidden fields and the data values from the visible fields sent back and forth to them. Though I fail to understand why the hidden fields are used. I can almost always think of ways to resolve the same problem without the use of hidden fields. How do hidden fields help in design?

Can anyone tell me what exactly is the advantage that hidden fields provide? Why are hidden fields used?

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