How to Properly Reference a JavaScript File in an ASP.NET Project?

Question

I have some pages that reference javascript files.

The application exists locally in a Virtual Directory, i.e. http://localhost/MyVirtualDirectory/MyPage.aspx

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Answer 1

Previous answers seem to assume that the Scripts directory always exists as a subdirectory of your application root. If that assumption is correct, and if the page is also at the root, then both of your earlier tags can be simply:

But my read of your second example is that Scripts isn't always a subdirectory of your application root (because the ../ at the beginning moves up a level, so Scripts would be a peer of your application root). That said, you did say the second example didn't work. :-) But if that's really the case, I'd strongly recommend adjusting one environment or the other so that the relative paths agree, and then always using relative paths as above.

The only reason for using ResolveUrl as far as I know would be if the pages in the application are in a folder structure and the tag may appear in a page at the root or in a page in a "subdirectory". If so, you can use ResolveUrl in both cases so you have an anchor point. I never author things that way, I always ensure I know where the page will be in the hierarchy (if there needs to be a hierarchy) and use an appropriate relative path for the current document.