jQuery s jquery-1 10 2 min map is triggering a 404 Not Found

Question

I m seeing error messages about a file  min map  being not found   GET jQuery s jquery-1 10 2 min map is triggering a 404  Not Found    Screenshot  Where is this coming from

User · Answer

Assuming you ve checked the file is actually present on the server  this could also be caused by your web server restricting which file types are served    In Apache this could be done with with the  lt FilesMatch gt  directive or a RewriteRule if you re using mod rewrite  In IIS you d need to look to the Web config file

User · Answer

If you want to get source map file different version  you can use this link  http   code jquery com jquery-x xx x min map  Instead x xx x put your version number   Note  Some links  which you get on this method  may be broken

User · Answer

After following the instructions in the other answers  I needed to strip the version from the map file for this to work for me   Example  Rename      jquery-1 9 1 min map   to     jquery min map

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Download the map file and the uncompressed version of jQuery  Put them with the minified version    Include minified version into your HTML    Check in Google Chrome    Read Introduction to JavaScript Source Maps Get familiar with Debugging JavaScript

User · Answer

I was presented with the same issue  The cause for me was Grunt concatenating my JavaScript file   I was using a   n as a separator which caused the path to the source map to 404   So dev tools was looking for jquery min map  instead of jquery min map   I know that isn t the answer to the original question  but I am sure there are others out there with a similar Grunt configuration

User · Answer

As I understand the browser  Chrome at least  it doesn t disable the source mapping by default  That means your application s users will trigger this source-mapping request by default   You can remove the source mapping by deleting the     sourceMappingURL jquery min map from your JavaScript file

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The new versions of jQuery require this file http   code jquery com jquery-1 10 2 min map  The usability of this file is described here http   www html5rocks com en tutorials developertools sourcemaps   Update   jQuery 1 11 0 2 1 0     sourceMappingURL comment is not included in the compressed file

User · Answer

If Chrome DevTools is reporting a 404 for a  map file  maybe jquery-1 10 2 min map  jquery min map or jquery-2 0 3 min map  but can happen with anything  first thing to know is this is only requested when using the DevTools   Your users will not be hitting this 404   Now you can fix this or disable the sourcemap functionality    Fix  get the files  Next  it s an easy fix  Head to http   jquery com download  and click the Download the map file link for your version  and you ll want the uncompressed file downloaded as well     Having the map file in place allows you do debug your minified jQuery via the original sources  which will save a lot of time and frustration if you don t like dealing with variable names like a and c    More about sourcemaps here  An Introduction to JavaScript Source Maps  Dodge  disable sourcemaps  Instead of getting the files  you can alternatively disable JavaScript source maps completely for now  in your settings  This is a fine choice if you never plan on debugging JavaScript on this page  Use the cog icon in the bottom right of the DevTools  to open settings  then

User · Answer

As it is announced in jQuery 1 11 0 2 1 0 Beta 2 Released the source map comment will be removed so the issue will not appear in newer  versions of jQuery   Here is the official announcement      One of the changes we   ve made in this beta is to remove the sourcemap   comment  Sourcemaps have proven to be a very problematic and puzzling   thing to developers  generating scores of confused questions on forums   like StackOverflow and causing users to think jQuery itself was   broken    Anyway  if you need to use a source map  it still be available      We   ll still be generating and distributing sourcemaps  but you will   need to add the appropriate sourcemap comment at the end of the   minified file if the browser does not support manually associating map   files  currently  none do   If you generate your own jQuery file using   the custom build process  the sourcemap comment will be present in the   minified file and the map is generated  you can either leave it in and   use sourcemaps or edit it out and ignore the map file entirely    Here you can find more details about the changes     Here you can find confirmation that with the jQuery 1 11 0 2 1 0 Released the source-map comment in the minified file is removed

User · Answer

jQuery 1 11 0 2 1 0 the    sourceMappingURL comment is not included in the compressed file

User · Answer

You can remove the 404 by removing the line      sourceMappingURL jquery-1 10 2 min map   from the top part of your jQuery file   The top part of the jQuery file will look like this       jQuery v1 10 2    c  2005  2013 jQuery Foundation  Inc    jquery org license     sourceMappingURL jquery-1 10 2 min map      Just change that to      jQuery v1 10 2    c  2005  2013 jQuery Foundation  Inc    jquery org license      Purpose of a source map  Basically it s a way to map a combined minified file back to an unbuilt state  When you build for production  along with minifying and combining your JavaScript files  you generate a source map which holds information about your original files  When you query a certain line and column number in your generated JavaScript you can do a lookup in the source map which returns the original location  Developer tools  currently WebKit nightly builds  Google Chrome  or Firefox 23   can parse the source map automatically and make it appear as though you re running unminified and uncombined files    Read more on this here

[javascript] jQuery's jquery-1.10.2.min.map is triggering a 404 (Not Found)

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