拖拽

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#div1{ position:absolute;left:0;top:0;200px; height:200px; background:red;}
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disX = oEvent.clientX -oDiv.offsetLeft;
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oDiv.style.left = oEvent.clientX-disX+'px';
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document.onmouseup=function(){
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原文地址:https://www.cnblogs.com/heboliufengjie/p/4675064.html