pageX/pageY,screenX/screenY,clientX/clientY的差别$(document).click(function(e){//x方向无差别 //alert(e.pageX+','+e.screenX+','+e.clientX); //y方向有差别,无滚动条时pageY和clientY一样,有的话三者有差别 alert(e.pageY+','+e.screenY+','+e.clientY);});