Dynamically Inserting Script with Javascript

Long story short I'm working on a Google Chrome Extension. The extensions don't have a开发者_如何学编程ccess to variables in the scope of the page they are operating on by default (you need to communicate through the DOM).

What I'm trying to do is insert a script into the page; this works fine by defining a script tag and a src attribute.

The problem is this script needs a variable to be initialized beforehand. In order to initialize this variable I'm trying to construct a script element with its code inline (rather than loaded from an external source) but I'm having trouble getting it to work.

Is this possible and if so, how do I define the source inside the script? I've tried appending a text-node containing the JS source to the script element but to no avail.

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It sucks, but the best way to do this is probably to communicate your data by injecting it into the DOM: http://code.google.com/chrome/extensions/content_scripts.html#host-page-communication

You also might be able to accomplish this by doing something like:

var script = document.createElement('script');
script.type = 'text/javascript';
script.text = 'alert("It works!");';
document.head.appendChild(script);

I haven't tested this, but I'm guessing it will work from your content scripts.