October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 Unleashed
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Debugging Ajax Applications
Before we start discussing the Microsoft AJAX frameworks, you need to be aware of two crucial debugging tools. Debugging Ajax applications presents challenges not present in a normal server-side application. If an Ajax call fails, you won’t necessarily know. You need a way of monitoring the Ajax calls that happen between the browser and server.
The first tool is Fiddler. You can download this tool (for free) at http://www.fiddlertool.com. Fiddler enables you to view HTTP requests and responses, including Ajax calls. Fiddler works by installing itself as a proxy between your web browser and the rest of the universe. You can use Fiddler with Internet Explorer, Mozilla Firefox, Opera, Safari, and just about any other ...