Link and execute external JavaScript file hosted on GitHub
When I try to change the linked reference of a local JavaScript file to a GitHub raw version my test file stops working. The error is:
Refused to execute script from ... because its MIME type ( text/plain ) is not executable, and strict MIME type checking is enabled.
Is there a way to disable this behavior or is there a service that allows linking to GitHub raw files?
Working code:
<script src="bootstrap-wysiwyg.js"></script>
Non-working code:
<script src="https://raw.github.com/mindmup/bootstrap-wysiwyg/master/bootstrap-wysiwyg.js"></script>
There is a good workaround for this, now, by using rawgit.com.
Steps :
raw.githubusercontent.com to rawgit.com (non-production) or cdn.rawgit.com (production) Example :
http://raw.githubusercontent.com/user/repo/branch/file.js
Use this URL for development:
http://rawgit.com/user/repo/branch/file.js
Use this URL in production:
http://cdn.rawgit.com/user/repo/tag/file.js
Also note that for production environments, consider targeting a specific tag; not the branch, to ensure you are getting the specific version of the file that you expect, rather than the HEAD version, which will change over time.
Why is this needed?
GitHub started using X-Content-Type-Options: nosniff , which instructs more modern browsers to enforce strict MIME type checking. It then returns the raw files in a MIME type returned by the server, preventing the browser from using the file as-intended (if the browser honors the setting).
For background on this topic, please refer to this discussion thread.
This is no longer possible. GitHub has explicitly disabled JavaScript hotlinking, and newer versions of browsers respect that setting.
Heads up: nosniff header support coming to Chrome and Firefox
rawgithub.com重定向到rawgit.com所以上面的例子现在是
http://rawgit.com/user/package/master/link.min.js
上一篇: JavaScript执行引擎未指定？