Why am I getting a 'GET jQuery's jquery-1.10.2.min.map 404 (Not Found)' error in Chrome DevTools?

jQuery's jquery-1.10.2.min.map 404 (Not Found) Error Explained

The error "GET jQuery's jquery-1.10.2.min.map is triggering a 404 (Not Found)" is encountered in Chrome DevTools and arises when a missing .map file is requested.

Understanding Source Map Requests

It's crucial to note that this issue only occurs within DevTools and has no impact on your users' experience. DevTools utilizes source maps to provide a convenient debugging experience, mapping minified JavaScript code to its original source files.

Solution: Acquiring the Missing File

To resolve this error, you need to retrieve the corresponding .map file. Navigate to the jQuery download page and download the "Download the map file" link for the particular jQuery version you're using. Additionally, download the uncompressed file.

Placing the .map file in the appropriate directory will enable you to debug your minified jQuery code using the original source files. This significantly simplifies debugging and reduces the need to work with cryptic variable names.

Alternative Solution: Disabling Source Maps

As an alternative to acquiring the .map file, you can disable JavaScript source maps in your DevTools settings. This is suitable if you don't plan on debugging JavaScript on the affected page.

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