(html/javascript)可以用滑鼠自由拖動的div（收藏）

最後更新：2018-12-05 來源：互聯網

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<html><head>
<title>測試可動div</title>
<script language='javascript' type='text/javascript'>
var offset_x;
        var offset_y;
        function Milan_StartMove(oEvent)
        {
            var whichButton;
            if(document.all&&oEvent.button==1) whichButton=true;
            else { if(oEvent.button==0)whichButton=true;}
            if(whichButton)
            {
                var oDiv=document.getElementById("oDiv");
                offset_x=parseInt(oEvent.clientX-oDiv.offsetLeft);
                offset_y=parseInt(oEvent.clientY-oDiv.offsetTop);
                document.documentElement.onmousemove=function(mEvent)
                {
                    var eEvent;
                    if(document.all) eEvent=event;
                    else{eEvent=mEvent;}
                    var oDiv=document.getElementById("oDiv");
                    var x=eEvent.clientX-offset_x;
                    var y=eEvent.clientY-offset_y;
                    oDiv.style.left=(x)+"px";
                    oDiv.style.top=(y)+"px";
                }
            }
        }
function Milan_StopMove(oEvent){document.documentElement.onmousemove=null; }
</script>
</head>
<body>
<div id="oDiv" onmousedown="Milan_StartMove(event)" onmouseup="Milan_StopMove(event)"

style="cursor:move;position:absolute;width:100px;height:60px;border:1px solid

silver;left:100px;top:100px;z-index:9999;"></div>
</body></html>

document.all[]是文檔中所有標籤組成的一個陣列變數，包括了文檔對象中所有元素；
event.button的值：0沒按鍵 1按左鍵 2按右鍵 3按左和右鍵 4按中間鍵 5按左和中間鍵 6按右和中間鍵 7按所有的鍵

下面對此代碼進行改進，模仿window，並且讓它可以蓋住select
<!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>
<title>測試可動div</title>
<script language='javascript' type='text/javascript'>
var offset_x;
var offset_y;
function Milan_StartMove(oEvent,div_id)
{
    var whichButton;
    if(document.all&&oEvent.button==1) whichButton=true;
    else { if(oEvent.button==0)whichButton=true;}
    if(whichButton)
    {
        var oDiv=div_id;
        offset_x=parseInt(oEvent.clientX-oDiv.offsetLeft);
        offset_y=parseInt(oEvent.clientY-oDiv.offsetTop);
        document.documentElement.onmousemove=function(mEvent)
        {
            var eEvent;
            if(document.all) eEvent=event;
            else{eEvent=mEvent;}
            var oDiv=div_id;
            var x=eEvent.clientX-offset_x;
            var y=eEvent.clientY-offset_y;
            oDiv.style.left=(x)+"px";
            oDiv.style.top=(y)+"px";
            var d_oDiv=document.getElementById("disable_"+oDiv.id);
            d_oDiv.style.left=(x)+"px";
            d_oDiv.style.top=(y)+"px";
        }
    }
}
function Milan_StopMove(oEvent){document.documentElement.onmousemove=null; }
function div_Close(o)
{var oDiv=o; oDiv.style.display="none";var d_oDiv=document.getElementById("disable_"+o.id);d_oDiv.style.display="none";}
</script>
</head>
<body>
<div id="oDiv" style="position:absolute;width:100px;height:60px;border:1px solid silver;left:100px;top:100px;z-index:9999;">
<div id="move" onmousedown="Milan_StartMove(event,this.parentNode)" onmouseup="Milan_StopMove(event)"
style="cursor:move;width:100%;height:15px;background-color:#0066cc; font-size:10px;">
<div onclick="div_Close(this.parentNode.parentNode)" style="float:right; width:10px; height:100%; cursor:hand; background-color:#cc3333; color:White;font-size:15px;">X</div>
</div>
<span>測試一下</span>
</div>
<div id="disable_oDiv" style="position:absolute;left:100px;top:100px;width:100px; height:60px; z-index:9998;FILTER:alpha(opacity=50);";>
<iframe src="about:blank" name="hiddenIframe" width="100%" frameborder="0" height="60px" title="遮蓋層"></iframe></div>
<select name="ListHead1$DropDownList3" id="ListHead1_DropDownList3">
<option selected="selected" value=""></option>
<option value="2">3333</option>
<option value="6">1111</option>
<option value="B">222</option>
</select>
</body>
</html>

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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