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$wnd and $doc Calling native JavaScript with JSNI
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GWT provides the $wnd and $doc variables to refer to the window and document objects
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Although the days of long and tedious code branches to target specific browsers in JavaScript are over, once in a while it's still necessary to do some simple code branching and object detection to ensure that a certain piece of code is working properly on a user's machine.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>select-option onclick </title>
<script type="text/javascript" >
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