Lyndon wraps JavaScript in a loving MacRuby embrace. A fun hack that is no longer maintained.
Ruby JavaScript
Latest commit a3fa1f6 Sep 12, 2009 @defunkt output to STDOUT and exit successfully
MacRuby has a tendency to blurt out SIMBL-related errors (for example)
on STDERR, so outputting to STDOUT makes it easier to distinguish (as
well as to capture output). [mojodna]
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bin output to STDOUT and exit successfully Sep 12, 2009
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LICENSE first pass Jun 19, 2009
README.markdown Update README and example Aug 26, 2009
Rakefile Jewelerize Lyndon Sep 10, 2009



Lyndon is like Johnson. But for MacRuby. And with JavaScriptCore.

Here It Goes

$ rip install git://
Successfully installed lyndon (41548d2)
$ lyndon
js> 1 + 1
=> 2
js> function name() { return "lyndon!" }
=> undefined
js> name
=> function name() { return "lyndon!" }
js> name()
=> "lyndon!"
js> Ruby.puts('Ruby, I presume.')
Ruby, I presume.
=> undefined
js> Ruby.File_read('hi.js')
=> "// this is hi.js\n"

Stuff like that.

Oh, the DOM

$ lyndon test.html 
js> Lyndon.require('jquery.min.js')
=> true
js> jQuery('#hi').html()
=> "Hello."
js> jQuery('#hi').html('Hi.')
=> [object Object]
js> jQuery('#hi').html()
=> "Hi."
=> "[object HTMLBodyElement]"
js> document.body.innerHTML
=> "\n    <h1 id=\"hi\">Hi.</h1>\n  \n\n"

HTML with JavaScript

$ cat examples/index.html | lyndon
<title>It worked!</title>
<div id="content">
<div id="hi">Hello world!</div></div>

Note that the <div id="hi">Hello world!</div></div> does not exist in examples/index.html - it's added at runtime by JavaScript. JavaScript that strips itself out and changes the <title>.


With Ruby

If you want:

$ macirb
>> require 'lyndon'
=> true
>> Lyndon.eval('1 + 1')
=> 2
>> r =
=> ##-<Lyndon::Runtime:...>
>> r.eval('var name = "chris"')
=> undefined
>> r.eval('name')
=> "chris"

That's basically it.

Chris Wanstrath //