JS实现拖拽效果

<!DOCTYPE HTML>

<html>

<head>

<meta charset="utf-8">

<title>拖拽效果</title>

<style>

#div1 {width:200px; height:200px; background:blue; position:absolute;}

</style>

<script>

window.onload=function ()

{

    var oDiv=document.getElementById('div1');

    oDiv.onmousedown=function (ev)

    {

        var oEvent=ev||event;

        var disX=oEvent.clientX-oDiv.offsetLeft;

        var disY=oEvent.clientY-oDiv.offsetTop;

        document.onmousemove=function (ev)

        {

            var oEvent=ev||event;

            oDiv.style.left=oEvent.clientX-disX+'px';

            oDiv.style.top=oEvent.clientY-disY+'px';

        };

        document.onmouseup=function ()

        {

            document.onmousemove=null;

            document.onmouseup=null;

        };

    };

};

</script>

</head>

<body>

<div id="div1"></div>

</body>

</html>

链接：Markdown 编辑器语法指南

巴特西

JS实现拖拽效果

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