Why Firefox does not load javascript accessed by a link?

I have a FF Add-ons disabled 15.0.1.
Every time a success, a link to a JavaScript, the script does not run, it loads just like a text in a browser window.
For example, on http://markup.io , there is a script to make annotations on web pages (http://api.markup.io/bootstrap.js?v=1 &). Other browsers running the script, but not FF.

A .js file is executed directly from the URL bar. Could you describe how you want to run it? For example, if you want to inject script into the current page or to work on the current page, you can try to save as a bookmarklet. To do this:

Right-click on an empty area of the bookmarks toolbar, then choose new bookmark.

In location, type or paste javascript: and then paste the script. At the end of the script, add 0 Sub; (if necessary, add a semicolon in front of it if it is separated by the pasted script).

Give a name to your bookmarklet, and then click Add.

Tags: Firefox

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