本文翻译自：jQuery's jquery-1.10.2.min.map is triggering a 404 (Not Found)
I'm seeing error messages about a file, min.map , being not found: 我看到未找到有关文件min.map错误消息：
GET jQuery's jquery-1.10.2.min.map is triggering a 404 (Not Found) GET jQuery的jquery-1.10.2.min.map触发404（未找到）
Screenshot 屏幕截图
Where is this coming from? 这是哪里来的？
#1楼
参考：https://stackoom.com/question/1F3el/jQuery的jquery-min-map触发-未找到
#2楼
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. 如果Chrome DevTools报告.map文件的404错误（可能是jquery-1.10.2.min.map ， jquery.min.map或jquery-2.0.3.min.map ，但可能发生任何事情），首先要了解的是仅在使用DevTools时才要求这样做。 Your users will not be hitting this 404. 您的用户不会点击此404。
Now you can fix this or disable the sourcemap functionality. 现在，您可以解决此问题或禁用源地图功能。
Fix: get the files 修复：获取文件
Next, it's an easy fix. 接下来，这很容易解决。 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. 转到http://jquery.com/download/ ，然后单击您所用版本的“ 下载地图文件”链接，您还需要下载未压缩的文件。
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 . 将地图文件放置在适当的位置允许您通过原始资源调试缩小的jQuery，如果您不喜欢处理变量名（如a和c ，则可以节省大量时间和沮丧的时间。
More about sourcemaps here: An Introduction to JavaScript Source Maps 有关源映射的更多信息，请参见： JavaScript源映射简介。
Dodge: disable sourcemaps 道奇：禁用源地图
Instead of getting the files, you can alternatively disable JavaScript source maps completely for now, in your settings. 除了获取文件外，您还可以在设置中暂时完全禁用JavaScript源映射。 This is a fine choice if you never plan on debugging JavaScript on this page. 如果您从未打算在此页面上调试JavaScript，那么这是一个不错的选择。 Use the cog icon in the bottom right of the DevTools, to open settings, then: 使用DevTools右下方的cog图标打开设置，然后： 
#3楼
As I understand the browser, Chrome at least, it doesn't disable the source mapping by default. 据我了解，至少Chrome是浏览器，默认情况下它不会禁用源映射。 That means your application's users will trigger this source-mapping request by default. 这意味着您的应用程序的用户将默认触发此源映射请求。
You can remove the source mapping by deleting the //@ sourceMappingURL=jquery.min.map from your JavaScript file. 您可以通过从JavaScript文件中删除//@ sourceMappingURL=jquery.min.map来删除源映射。
#4楼
You can remove the 404 by removing the line 您可以通过删除行来删除404
//@ sourceMappingURL=jquery-1.10.2.min.map
from the top part of your jQuery file. 从jQuery文件的顶部开始。
The top part of the jQuery file will look like this. jQuery文件的顶部将如下所示。
/*! jQuery v1.10.2 | (c) 2005, 2013 jQuery Foundation, Inc. | jquery.org/license
//@ sourceMappingURL=jquery-1.10.2.min.map
*/
Just change that to 只需将其更改为
/*! jQuery v1.10.2 | (c) 2005, 2013 jQuery Foundation, Inc. | jquery.org/license */
Purpose of a source map 源图的目的
Basically it's a way to map a combined/minified file back to an unbuilt state. 基本上，这是一种将组合/缩小的文件映射回未构建状态的方法。 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. 为生产而进行构建时，连同最小化和合并JavaScript文件，您将生成一个源映射，其中包含有关原始文件的信息。 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. 当在生成的JavaScript中查询特定的行号和列号时，可以在源映射中进行查找，以返回原始位置。 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. 开发人员工具（当前为WebKit夜间版本，Google Chrome或Firefox 23+）可以自动解析源地图，并使其看起来好像您正在运行未缩小和未合并的文件。 (Read more on this here ) （了解更多关于此这里 ）
#5楼
The new versions of jQuery require this file http://code.jquery.com/jquery-1.10.2.min.map jQuery的新版本需要此文件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/ 在http://www.html5rocks.com/zh-CN/tutorials/developertools/sourcemaps/上介绍了此文件的可用性
Update: 更新：
jQuery 1.11.0/2.1.0 jQuery 1.11.0 / 2.1.0
// sourceMappingURL comment is not included in the compressed file . // sourceMappingURL注释不包含在压缩文件中 。
#6楼
Download the map file and the uncompressed version of jQuery. 下载地图文件和jQuery的未压缩版本。 Put them with the minified version: 将它们放到最小版本中：
Include minified version into your HTML: 在您的HTML中包含缩小的版本：
Check in Google Chrome: 签入Google Chrome：
Read Introduction to JavaScript Source Maps 阅读JavaScript源地图简介
Get familiar with Debugging JavaScript 熟悉调试JavaScript
