原生js拖拽

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>无标题文档</title>

<script type="text/javascript">

window.onload=function()

{

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

oDiv.onmousedown=function(ev)

{

    var oEvent=ev||event;

    var x=;

    var y=;

    x=oEvent.clientX-oDiv.offsetLeft;

    y=oEvent.clientY-oDiv.offsetTop;

    document.onmousemove=function(ev)

    {

        var oEvent=ev||event;

        var out1=oEvent.clientX-x;

        var out2=oEvent.clientY-y;

        var oWidth=document.documentElement.clientWidth-oDiv.offsetWidth;

        var oHeight=document.documentElement.clientHeight-oDiv.offsetHeight;

        if(out1<)

        {out1=;}

        else if (out1>oWidth)

        {

            out1=oWidth;

        }

        if(out2<)

        {out2=;}

        else if (out2>oHeight)

        {

            out2=oHeight;

        }

        oDiv.style.left=out1+'px';

        oDiv.style.top=out2+'px';

    }

        document.onmouseup=function()

    {

        document.onmousemove=null;

        document.onmouseup=null;

    }

    return false;//解决firefox低版本的bug问题

}

}

</script>

</head>
巴特西

原生js拖拽

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