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lang-js
Do not use this method anymore as it is deprecated.The createEvent docs say "Many methods used with createEvent, such as initCustomEvent, are deprecated. Use event constructors instead." This page looks promising for UI events.new Event()method. I think as a hack against older browsers you could do something likeif (Event.prototype.initEvent) { /* deprecated method */ } else { /* current method */ }. Where the current method is the avetisk's answer.