JS各种各样的拖动效果

<html> 
<head><title>拖动效果函数演示 by Longbill.cn</title> 
<style> 
body 
{ 
    font-size:12px; 
    color:#333333; 
    border : 0px solid blue; 
} 
div 
{ 
    position : absolute; 
    background-color : #c3d9ff; 
    margin : 0px; 
    padding : 5px; 
    border : 0px; 
    width : 100px; 
    height:100px; 
} 
</style> 
</head> 
<body> 
<script> 
function drag(o,s) 
{ 
    if (typeof o == "string") o = document.getElementById(o); 
    o.orig_x = parseInt(o.style.left) - document.body.scrollLeft; 
    o.orig_y = parseInt(o.style.top) - document.body.scrollTop; 
    o.orig_index = o.style.zIndex; 
         
    o.onmousedown = function(a) 
    { 
        this.style.cursor = "move"; 
        this.style.zIndex = 10000; 
        var d=document; 
        if(!a)a=window.event; 
        var x = a.clientX+d.body.scrollLeft-o.offsetLeft; 
        var y = a.clientY+d.body.scrollTop-o.offsetTop; 
        //author: www.longbill.cn 
        d.ondragstart = "return false;" 
        d.onselectstart = "return false;" 
        d.onselect = "document.selection.empty();" 
                 
        if(o.setCapture) 
            o.setCapture(); 
        else if(window.captureEvents) 
            window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP); 

        d.onmousemove = function(a) 
        { 
            if(!a)a=window.event; 
            o.style.left = a.clientX+document.body.scrollLeft-x; 
            o.style.top = a.clientY+document.body.scrollTop-y; 
            o.orig_x = parseInt(o.style.left) - document.body.scrollLeft; 
            o.orig_y = parseInt(o.style.top) - document.body.scrollTop; 
        } 

        d.onmouseup = function() 
        { 
            if(o.releaseCapture) 
                o.releaseCapture(); 
            else if(window.captureEvents) 
                window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP); 
            d.onmousemove = null; 
            d.onmouseup = null; 
            d.ondragstart = null; 
            d.onselectstart = null; 
            d.onselect = null; 
            o.style.cursor = "normal"; 
            o.style.zIndex = o.orig_index; 
        } 
    } 
     
    if (s) 
    { 
        var orig_scroll = window.onscroll?window.onscroll:function (){}; 
        window.onscroll = function () 
        { 
            orig_scroll(); 
            o.style.left = o.orig_x + document.body.scrollLeft; 
            o.style.top = o.orig_y + document.body.scrollTop; 
        } 
    } 
} 
</script> 

<div id="div1" style="left:10px;top:10px;">div1:我可以被拖动</div> 
<div id="div2" style="left:120px;top:10px;background-color : #f3d9ff">div2:来拖我呀</div> 
<div id="div3" style="left:230px;top:10px;background-color : #c3ffff">div3:我随便你拖</div> 
<div id="div4" style="left:10px;top:120px;background-color : #c3d944">div4:我可以随窗口滑动,把我拖到最下面,然后滚动网页看看</div> 
<div id="div5" style="left:120px;top:120px;background-color : #f3d944">作者: Longbill
<a href=http://www.longbill.cn target=_blank>www.longbill.cn</a> 
</div> 
<div id="div6" style="left:230px;top:120px;background-color : #e3f944;width:200px;">参数说明:

drag(obj [,scroll]);

obj:对象的id或对象本身;

scroll(可选):对象是否随窗口拖动而滑动,默认为否

鼠标右键查看源代码 
</div> 


<script> 
drag("div1"); 
drag("div2"); 
drag("div3"); 
drag("div4",1); 
drag("div5",1); 
drag("div6",1); 


</script> 

</body>

</hrml>

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转自:http://www.cnblogs.com/jyshi/

posted @ 2011-09-01 09:06  jyshi  阅读(719)  评论(0编辑  收藏  举报
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