Form data changed by user?

hdougl1 · Aug 20, 2003

I would like to know when a user modifies any of the data presented on a web full of data. I have a JavaScript function (window.confirm) to prompt the user "Are you sure you want to close this window? Yes/cancel" when exiting the page whether or not they made any changes.

Instead I would like to maybe compare the form object on the load event against the form object before close, but I don't know if it's possible or how. Any ideas are greatly appreciated.

Veep · Aug 20, 2003

Unless you're writing the changes to a database there's no way that you're going to know if any changes were made. If you are writing to a database then you'll have to do a before and after field to field comparison and write the differences to an audit table. It's a lot of typing but not that difficult to do.

dmhirsch · Aug 20, 2003

You would need to create an onLoad javascript function that stores each of the initial values in a page-level variable (i.e. a variable created outside any function in <HEAD>). Then the confirm function compares their current values with the values stored at load time.

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Form data changed by user?

hdougl1

Programmer

Veep

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dmhirsch

Programmer

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