C＃中的Javascript和用户控件

Question

I have some JS functions within the ASCX of a user control. This UC is loaded multiple times in the host page. When I do a view source, I see the JS repeated for every instance of the UC.

Is there a way I can have it load the functions only once? I would like to reduce the size of the page for better performance

Answer 1

Put the functions in a separate .js file, then add it by calling Page. ClientScript . RegisterClientScriptInclude ().

You can also mark the file as an Embedded Resource, and then include it using Page.ClientScript. RegisterClientScriptResource ().

Note that if you're using a ScriptManager/UpdatePanels, use ScriptManager . RegisterClientScriptInclude or . RegisterClientScriptResource so that it'll know how to add the reference correctly on a partial postback.