module Browser::EventTarget
Public Instance Methods
off(event_name, &block)
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Remove an event handler
@param event_name [String] the name of the event @block the handler to remove, as returned from `on`
# File lib/browser/event_target.rb, line 27 def off event_name, &block if `#@native.removeEventListener !== undefined` `#@native.removeEventListener(event_name, block)` elsif `#@native.removeListener !== undefined` `#@native.removeListener(event_name, block)` else warn "[Browser] Not entirely sure how to remove an event listener from #{self}" end nil end
on(event_name, &block)
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Add the block as a handler for the specified event name. Will use either `addEventListener` or `addListener` if they exist.
@param event_name [String] the name of the event @return [Proc] the block to pass to `off` to remove this handler @yieldparam event [Browser::Event] the event object
# File lib/browser/event_target.rb, line 9 def on event_name, &block wrapper = proc { |event| block.call Event.new(event) } if `#@native.addEventListener !== undefined` `#@native.addEventListener(event_name, wrapper)` elsif `#@native.addListener !== undefined` `#@native.addListener(event_name, wrapper)` else warn "[Browser] Not entirely sure how to add an event listener to #{self}" end wrapper end