Flowdock
call(function, *arguments, &block) public

Calls the JavaScript function, optionally with the given arguments.

If a block is given, the block will be passed to a new JavaScriptGenerator; the resulting JavaScript code will then be wrapped inside function() { ... } and passed as the called function’s final argument.

Examples:

 # Generates: Element.replace(my_element, "My content to replace with.")
 page.call 'Element.replace', 'my_element', "My content to replace with."

 # Generates: alert('My message!')
 page.call 'alert', 'My message!'
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