function generateuuid() { var d = new date().gettime(); var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = (d + math.random()*16)%16 | 0; d = math.floor(d/16); return (c=='x' ? r : (r&0x3|0x8)).tostring(16); }); return uuid; };
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offset、client、scroll (width,height、left,top、X,Y)
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