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execjs/readme.md

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ExecJS
======
ExecJS lets you run JavaScript code from Ruby. It automatically picks
the best runtime available to evaluate your JavaScript program, then
returns the result to you as a Ruby object.
ExecJS supports these runtimes:
* [therubyracer](https://github.com/cowboyd/therubyracer) - Google V8
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embedded within MRI Ruby
* [therubyrhino](https://github.com/cowboyd/therubyrhino) - Mozilla
Rhino embedded within JRuby
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* [Google V8](http://code.google.com/p/v8/)
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* [Node.js](http://nodejs.org/)
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* Apple JavaScriptCore - Included with Mac OS X
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* [Mozilla Spidermonkey](http://www.mozilla.org/js/spidermonkey/)
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* TODO [Microsoft Windows Script Host](http://msdn.microsoft.com/en-us/library/9bbdkx3k.aspx) (JScript)
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A short example:
require "execjs"
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ExecJS.eval "'red yellow blue'.split(' ')"
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# => ["red", "yellow", "blue"]