常见问题

jQuery之浮动窗口实现代码(两种方法)

作者:用户投稿2026-01-11 10:53:21

第一种方法:
预览:

Html代码
复制代码代码如下:
<html>
<head>
<title>浮动窗口</title>
<link type="text/css" rel="stylesheet" href="css/overflow.css" />
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/overflow.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var b = $("#b");
var overFlow = $("#over");
b.click(function(){
overFlow.fadeIn();
$("#mask").css("background","#111");
$("#mask").css("opacity","0.8");
})
$("#close").click(function(){
overFlow.fadeOut();
$("#mask").css("background","#fff");
$("#mask").css("opacity","1");
});
drag($("#over"),$("#title"));
}) ;
</script>
</head>
<body>
<div id="over">
<div id="title"><span id="t">这只是一个演示标题</span><span id="close">[ x ]</span></div>
<div id="content">
When a container object, such as a div, has mouse capture, events originating on objects within that container are fired by the div, unless the bContainerCapture parameter of the setCapture method is set to false. Passing the value false causes the container to no longer capture all document events. Instead, objects within that container still fire events, and those events also bubble as expected.<br/>
---This is edited by Alp.
</div>
</div>
<div id="mask"> <a id="b" href="#">click</a></div>
</body>
</html>

Js代码
复制代码代码如下:
function drag(overFlow,title){
title.onmousedown = function(evt){
var doc = document;
var evt = evt || window.event;
var x = evt.offsetX?evt.offsetX:evt.layerX;
var y = evt.offsetY?evt.offsetY:evt.layerY;
if(overFlow.setCapture){
overFlow.setCapture();
}else if(window.captureEvents){
window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);
}
doc.onmousemove = function(evt){
evt = evt || window.event;
var xPosition = evt.pageX || evt.clientX;
var yPosition = evt.pageY || evt.clientY;
var newX = xPosition - x;
var newY = yPosition - y;
overFlow.style.left = newX;
overFlow.style.top = newY;
};
doc.onmouseup = function(){
if(overFlow.releaseCapture){
overFlow.releaseCapture();
}else if(window.captureEvents){
window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP);
}
doc.onmousemove=null;
doc.onmouseup=null;
};
};
}

css代码
复制代码代码如下:
#over{
position: absolute;
left: 300px;
top: 200px;
border: 1px solid black;
display: none;
background: #cccccc;
cursor: default;
width: 300px;
z-index: 10;
opacity: 1;
}
#title{
border: 1px solid #1840C4;
background: #95B4DC;
padding: 2px;
font-size:12px;
cursor: default;
}
#close{
cursor: pointer;
margin-right: 1px;
overflow: hidden;
}
#content{
border: 1px solid #C2D560;
background: #EFF4D7;
}
#t{
margin-right:145px;
}
#mask{
z-index: 1;
background: #fff;
width: 1024px;
height: 800px;
}
#b{
position: absolute;
left: 200px;
top: 100px;
}
body{
padding: 0px;
margin: 0px;
}
#over{
background: transparent;
}

第二种方法:
消息框遮罩层:<iframe id="show_upload_iframe" frameborder=0 scrolling="no" style="display:none; position:absolute;"></iframe><div id="show_upload">nothing...</div>'

　　页面加载loading中:<div id="body_loading" onClick="loaded();"><img src="__PUBLIC__/images/body_load.gif"></div>

　　关闭浮动窗口:<a href="javascript:hideupload()">关闭窗口建议用小图片</a>

　　打开浮动窗口:<a href="javascript:showupload('admin.php')">打开浮动</a>

复制代码代码如下:
// 消息框loading
function loading(){
var o = $('#body_loading');
o.css("left",(($(document).width())/2-(parseInt(o.width())/2))+"px");
o.css("top",(($(document).height()+$(document).scrollTop())/2-(parseInt(o.height())/2))+"px");
o.fadeIn("fast");
}
// 消息框消失
function loaded(){
var o = $('#body_loading');
o.fadeOut("fast");
}
// 隐藏浮动窗口
function hideupload(){
$('#show_upload').hide();
$('#show_upload_iframe').hide();
}
// 弹出浮动窗口
function showupload(ajaxurl){
loading();
var o=$('#show_upload');
var f=$('#show_upload_iframe');
var top = 200;
$.ajax({
url: ajaxurl,
//cache: false,
success: function(res){
loaded();
o.html(res);
o.css("left",(($(document).width())/2-(parseInt(o.width())/2))+"px");
if($(document).scrollTop()>200){
top = ($(document).height()+$(document).scrollTop())/2-(parseInt(o.height())/2);
}
o.css("top",top+"px");
f.css({'width':o.width(),'height':o.height(),'left':o.css('left'),'top':o.css('top')});
f.show();
o.show();
}
});
}

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