比较精简的Javascript拖动效果函数代码- Javascript

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比较精简的Javascript拖动效果函数代码

出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-12 浏览: 143 ::

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用javascript实现读取txt文档的脚本一个可以得到元素真实的背景颜色的javascript脚本

点击运行可以看到效果:

<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>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

用javascript实现读取txt文档的脚本一个可以得到元素真实的背景颜色的javascript脚本

比较精简的Javascript拖动效果函数代码

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