13 lines
362 B
CoffeeScript
13 lines
362 B
CoffeeScript
Polyfill =
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init: ->
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Polyfill.visibility()
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visibility: ->
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# page visibility API
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return unless 'webkitHidden' of document
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Object.defineProperties HTMLDocument.prototype,
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visibilityState:
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get: -> @webkitVisibilityState
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hidden:
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get: -> @webkitHidden
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$.on d, 'webkitvisibilitychange', -> $.event 'visibilitychange'
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