Source Map is a pretty useful and handy feature in terms of debugging on production servers. And if you are using jQuery 1.9+ Version then you may encounter the 404 not found error "jQuery x.x.x.min.map not found". For example, if you are using jQuery 2.0.2 version then you may get "jquery-2.0.2.min.map" not found error . And this is also applicable for jQuery mobile version as well.
When jQuery 1.9 released, then the source map feature was supported by Chrome only. And now the latest version of Firefox 23.0.1, also supports this feature. Find out how to enable source maps in firefox?
From Official jQuery website,
So when you download jQuery library then you should also download the source map file. For example, if you have downloaded jquery-2.0.3, then you should also download called jquery-2.0.3.min.map.
The only way to fix this error is to place source map file at same location where is your jquery library is. For example, location of jquery-2.0.3.min.map must be where is your jquery-2.0.3.min.js file is.
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