(html/javascript)可以用鼠标自由拖动的div（收藏）

分手后的思念是犯贱 2022-09-21 05:56 60阅读 0赞

<html><head>
    <title>测试可动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.οnmοusemοve=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.οnmοusemοve=null; }
    </script>
    </head>
    <body>
    <div id="oDiv" οnmοusedοwn="Milan_StartMove(event)" οnmοuseup="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** \[\]是文档中所有标签组成的一个数组变量，包括了文档对象中所有元素；document.all是用来简测是否为IE的。因为在非IE的浏览器中。它为null.  
event.button 的值：0没按键    1按左键   2按右键 3按左和右键 4按中间键   5按左和中间键 6按右和中间键    7按所有的键.注意这个可能是在IE中的。具体还没有去查。经测试，在非IE中。鼠标左键，中键，右键分别对应1，2，3;

下面是另一位作者解决不能遮蔽select 元素用的。但是经测试，在360浏览器中是可以遮蔽IE的。

下面对此代码进行改进，模仿window，并且让它可以盖住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>测试可动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.οnmοusemοve=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.οnmοusemοve=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" οnmοusedοwn="Milan_StartMove(event,this.parentNode)" οnmοuseup="Milan_StopMove(event)" 
    style="cursor:move;width:100%;height:15px;background-color:#0066cc; font-size:10px;">
    <div οnclick="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>测试一下</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="遮盖层"></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>