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Editorial Team
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Asked: 2026-05-20T11:16:43+00:00

I use AJAX controls a lot – AJAX update panels, AJAX-enabled grids, etc. (mostly

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I use AJAX controls a lot – AJAX update panels, AJAX-enabled grids, etc. (mostly from Infragistics), and most of the time, things work great. But sometimes they don’t, and I have no idea where to start with debugging etc. The AJAX part of it is a black box (seemingly), and I really don’t like that.

I want to know enough about AJAX and javascript such that I have confidence to work with these controls instead of just praying that they work.

I want to be able to debug them, and also have confidence that I am using them properly (because I don’t feel I can possibly use them really properly and appropriately if I don’t know what they are doing).

What do I need to know to get this comfort? Where can I learn about this? How should I go about tackling learning about this?

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1 Answer

  1. Editorial Team

    The good/bad thing with libraries is that they abstract away the problem. Great when they work but not so useful when they don’t. I’d recommend finding a learning resource on using xmlHttpRequest and work through the code examples. As @Catalin says – use Firebug to step through execution and inspect the http requests generated.

    There are a lot of resources to choose from out there. One that springs to mind is:
    Bulletproof Ajax by Jeremy Keith http://bulletproofajax.com/

    Its quite old now but is a good explanation written for a mixed audience. The code examples are available for download from the site too.

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