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.gitignore | ||
LICENSE | ||
Manifest | ||
README.md | ||
Rakefile | ||
harmony.gemspec | ||
lib/harmony.rb | ||
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Harmony | ||
======= | ||
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.,ad88888888baa, | ||
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""88888888888888888P" | ||
"""""""""""" | ||
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Summary | ||
------- | ||
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Harmony allows evaluating javascript + DOM code within ruby. | ||
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Features | ||
-------- | ||
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Harmony is: | ||
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* Very simple to use | ||
* An attempt to harmonize ruby + javascript + DOM + command-line | ||
* As harmonious as yin yang and Tenderheart Bear | ||
* Particularly corny | ||
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Examples | ||
-------- | ||
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Are you in your Bo-Zone, Bo-Bodies? Here's our new Animove! | ||
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### Simple Javascript Parsing | ||
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require 'harmony' | ||
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page = Harmony::Page.new(<<-HTML) | ||
<html> | ||
<head> | ||
<title>Foo</title> | ||
</head> | ||
<body></body> | ||
</html> | ||
HTML | ||
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page.execute_js("1+1") #=> 2 | ||
page.execute_js("document.title") #=> "Foo" | ||
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The Page object's `#execute_js` method (aliased as `#x` for convenience) takes a | ||
string of javascript code, executes it and returns the last statement's value | ||
(just like a ruby method). | ||
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### Javascript Unit Tests | ||
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One interesting use of Harmony is to test your javascript code within your ruby | ||
application's own tests (test/unit, minitest, RSpec, nanotest, etc). Which | ||
consequently means that you can now run _browser-less, fully command-line | ||
based, DOM-javascript tests_. | ||
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require 'test/unit' | ||
require 'harmony' | ||
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class JavascriptTest < Test::Unit::TestCase | ||
def setup | ||
@page = Harmony::Page.new | ||
@page.execute_js(File.read('public/javascripts/foo.js')) | ||
end | ||
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def test_foo | ||
assert_equal "world", @page.execute_js(<<-JS) | ||
foo = new Foo; | ||
foo.hello; | ||
JS | ||
end | ||
end | ||
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### DOM Handling | ||
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Harmony's knowledge of the DOM means it can even parse client-side js frameworks, | ||
like JQuery, Prototype, etc. | ||
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require 'harmony' | ||
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page = Harmony::Page.new(<<-HTML) | ||
<html> | ||
<head></head> | ||
<body> | ||
<div id="widget">ohaie</div> | ||
</body> | ||
</html> | ||
HTML | ||
page.execute_js( File.read('path/to/jquery.js') ) | ||
page.execute_js( "$('#widget').innerHTML" ) #=> "ohaie" | ||
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### Fetching Documents | ||
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`Harmony::Page.fetch(uri)` allows creating a page from a remote document. | ||
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require 'harmony' | ||
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page = Harmony::Page.fetch('http://example.com') | ||
page.execute_js('document.title') #=> "Example Web Page" | ||
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`fetch` also accepts "file://" uris. | ||
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Acknowledgement | ||
--------------- | ||
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Harmony is only a very thin DSL wrapper around two **amazing** libs, | ||
[Johnson][1] and [Envjs][2]. The authors/contributors of those libs have been | ||
doing a huge amount of great work for quite a while, so please go recommend | ||
them on on WorkingWithRails right now and/or follow them on github: | ||
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[jbarnette][3], [tenderlove][4], [smparkes][5], [wycats][6], [matthewd][7], [thatcher][8], [jeresig][9] | ||
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Special thanks go to [smparkes][10] for his patient help, and for providing the | ||
last bit of glue that made everything work together. | ||
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Links | ||
----- | ||
* code: <http://github.com/mynyml/harmony> | ||
* docs: <http://yardoc.org/docs/mynyml-harmony> | ||
* wiki: <http://wiki.github.com/mynyml/harmony> | ||
* bugs: <http://github.com/mynyml/harmony/issues> | ||
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[1]: http://github.com/jbarnette/johnson/ | ||
[2]: http://env-js.appspot.com/ | ||
[3]: http://www.workingwithrails.com/person/10668-john-barnette | ||
[4]: http://github.com/tenderlove/ | ||
[5]: http://www.workingwithrails.com/person/11739-steven-parkes | ||
[6]: http://www.workingwithrails.com/person/1805-yehuda-katz | ||
[7]: http://www.workingwithrails.com/person/6221-matthew-draper | ||
[8]: http://github.com/thatcher/ | ||
[9]: http://ejohn.org/ | ||
[10]: http://github.com/smparkes/ | ||
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