Question

In ASP.NET AJAX, I can set ScriptMode for ScriptManager.
The script mode can be Debug or Release.
What are the exact differences between them? Is it true that on debug mode, generated scripts won’t cache on the browser while in Release mode they will be cached, and subsequent server access will be prevented?

Answer 1

Refering to ScriptManager.ScriptMode Property:

In Debug mode, debug versions of
client script libraries are used in
the Web page unless the retail
attribute of the deployment
configuration element is set to true.

In Release mode, release versions of
client script libraries are used in
the Web page unless the retail
attribute of the deployment
configuration element is set to false.

Refering to Debugging and Tracing Ajax Applications Overview:

The Microsoft Ajax architecture
provides a model for release and debug
modes. Release mode provides error
checking and exception handling that
is optimized for performance, with
minimized script size. Debug mode
provides more robust debugging
features, such as type and argument
checking. If you create debug versions
of client script files or script
resources, ASP.NET runs the debug
versions when the application is in
debug mode. This enables you to throw
exceptions in debug scripts but still
keep the size of release code to a
minimum.