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README.rdoc

This commit is contained in:
Charles Lowell 2009-11-13 12:33:08 -05:00
parent 88707e09e2
commit aa0a2a999b

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@ -17,18 +17,40 @@ Embed the Mozilla Rhino Javascript interpreter into Ruby
1. Ruby Objects goes into Javascript
1. Our shark's in the Javascript!
require 'rhino'
# evaluate some simple javascript
Rhino::Context.open do |context|
context.eval("7 * 6") #=> 42
end
eval_js "7 * 6" #=> 42
# evaluate a ruby function from javascript
Rhino::Context.open do |context|
context["say"] = lambda {|word, times| word * times}
context.eval("say("Hello", 3)") #=> HelloHelloHello
end
# embed a ruby object into your javascript environment
class MyMath
def plus(lhs, rhs)
lhs + rhs
end
end
Rhino::Context.open do |context|
context["math"] = MyMath.new
context.eval("math.plus(20,22)") #=> 42
end
# make a ruby object *be* your javascript environment
math = MyMath.new
Rhino::Context.open(:with => math) do |context|
context.eval("plus(20,22)") #=> 42
end
#or the equivalent
math.eval_js("plus(20,22)")
# Configure your embedding setup