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遮罩層點(diǎn)擊按鈕彈出并且具有拖動(dòng)和關(guān)閉效果（兩種方法）

更新時(shí)間：2015年08月20日 10:59:32 作者：1565783227

實(shí)現(xiàn)點(diǎn)擊按鈕彈出遮罩層，點(diǎn)擊按鈕可以隨意拖動(dòng)和關(guān)閉。接下來(lái)，通過(guò)本篇文章給大家介紹遮罩層點(diǎn)擊按鈕彈出并且具有拖動(dòng)和關(guān)閉效果，需要的朋友可以參考下

首先給大家展示演示效果：

基于JavaScript的網(wǎng)頁(yè)彈出層，鼠標(biāo)按在彈出層的標(biāo)題欄處，可以拖動(dòng)該浮動(dòng)層隨意移動(dòng)位置，不需要時(shí)也可以關(guān)閉，操作體驗(yàn)舒服，兼容性好，IE/火狐等眾多瀏覽器下運(yùn)行穩(wěn)定、反應(yīng)快速。代碼表現(xiàn)方面，簡(jiǎn)潔務(wù)實(shí)，不玩虛的，拿去學(xué)習(xí)也相當(dāng)不錯(cuò)。

js代碼

示例一：


<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>彈出層并可拖拽</title>
<style>
html,body{height:100%;overflow:hidden;}
body,div,h2{margin:0;padding:0;}
body{font:12px/1.5 Tahoma;}
li{ list-style-type:none}
center{padding-top:10px;}
button{cursor:pointer;}
#overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000;opacity:0.5;filter:alpha(opacity=50);display:none;}
#win{position:absolute;top:50%;left:50%;width:400px;height:200px;background:#fff;border:4px solid #f90;margin:-102px 0 0 -202px;display:none;}
h2{font-size:12px;height:18px;text-align:right;background:#FC0;border-bottom:3px solid #f90;padding:5px;cursor:move;}
h2 span{color:#f90;cursor:pointer;background:#fff;border:1px solid #f90;padding:0 2px;}
</style>
<script>
window.onload = function ()
{
var oWin = document.getElementById("win");
var oLay = document.getElementById("overlay");
var oBtn = document.getElementsByTagName("button")[0];
var oClose = document.getElementById("close");
var oH2 = oWin.getElementsByTagName("h2")[0];
var bDrag = false;
var disX = disY = 0;
oBtn.onclick = function ()
{
oLay.style.display = "block";
oWin.style.display = "block"
};
oClose.onclick = function ()
{
oLay.style.display = "none";
oWin.style.display = "none"
};
oClose.onmousedown = function (event)
{
(event || window.event).cancelBubble = true;
};
oH2.onmousedown = function (event)
{
var event = event || window.event;
bDrag = true;
disX = event.clientX - oWin.offsetLeft;
disY = event.clientY - oWin.offsetTop;
this.setCapture && this.setCapture();
return false
};
document.onmousemove = function (event)
{
if (!bDrag) return;
var event = event || window.event;
var iL = event.clientX - disX;
var iT = event.clientY - disY;
var maxL = document.documentElement.clientWidth - oWin.offsetWidth;
var maxT = document.documentElement.clientHeight - oWin.offsetHeight;
iL = iL < 0 ? 0 : iL;
iL = iL > maxL ? maxL : iL;
iT = iT < 0 ? 0 : iT;
iT = iT > maxT ? maxT : iT;
oWin.style.marginTop = oWin.style.marginLeft = 0;
oWin.style.left = iL + "px";
oWin.style.top = iT + "px";
return false
};
document.onmouseup = window.onblur = oH2.onlosecapture = function ()
{
bDrag = false;
oH2.releaseCapture && oH2.releaseCapture();
};
};
</script>
<meta charset="utf-8">
</head>
<body>
<div id="overlay"></div>
<div id="win"><h2><span id="close">×</span></h2>
<li><a  target='_blank'>http://www.100sucai.com</a></li>
<li><a  title="CSS3和Html5">CSS3和Html5</a></li>
<li><a  title="圖表與圖形">圖表與圖形</a></li>
</div>
<center><button>彈出層</button></center>
</body>
</html><br />

jq代碼：

　　代碼示例二：

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>jQuery彈出層效果</title>
<meta content="網(wǎng)頁(yè)特效,特效代碼,jQuery,css特效,Js代碼,廣告幻燈,圖片切換" name="keywords" />
<meta content="jQuery彈出層效果，有關(guān)閉按鈕，代碼簡(jiǎn)單易懂，你可以隨意修改彈出層的參數(shù)。" name="description" />
<script src="/uploads/common/js/jquery-1.4.2.min.js" type="text/javascript"></script>
<style>
.black_overlay{
display: none;
position: absolute;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color: black;
z-index:1001;
-moz-opacity: 0.8;
opacity:.80;
filter: alpha(opacity=80);
}
.white_content {
display: none;
position: absolute;
top: 10%;
left: 10%;
width: 80%;
height: 80%;
border: 16px solid lightblue;
background-color: white;
z-index:1002;
overflow: auto;
}
.white_content_small {
display: none;
position: absolute;
top: 20%;
left: 30%;
width: 40%;
height: 50%;
border: 16px solid lightblue;
background-color: white;
z-index:1002;
overflow: auto;
}
</style>
<script type="text/javascript">
//彈出隱藏層
function ShowDiv(show_div,bg_div){
document.getElementById(show_div).style.display='block';
document.getElementById(bg_div).style.display='block' ;
var bgdiv = document.getElementById(bg_div);
bgdiv.style.width = document.body.scrollWidth;
// bgdiv.style.height = $(document).height();
$("#"+bg_div).height($(document).height());
};
//關(guān)閉彈出層
function CloseDiv(show_div,bg_div)
{
document.getElementById(show_div).style.display='none';
document.getElementById(bg_div).style.display='none';
};
</script>
</head>
<body>
<input id="Button1" type="button" value="點(diǎn)擊彈出層" onclick="ShowDiv('MyDiv','fade')" />
<!--彈出層時(shí)背景層DIV-->
<div id="fade" class="black_overlay">
</div>
<div id="MyDiv" class="white_content">
<div style="text-align: right; cursor: default; height: 40px;">
<span style="font-size: 16px;" onclick="CloseDiv('MyDiv','fade')">關(guān)閉</span>
</div>
目前來(lái)說(shuō)，我還是喜歡這個(gè)自己改造的彈出層。自己在項(xiàng)目中也用的是這個(gè)。
</div>
</body>
</html>

以上通過(guò)jq和js分別實(shí)現(xiàn)了遮罩層點(diǎn)擊按鈕彈出并且具有拖動(dòng)和關(guān)閉效果，希望對(duì)大家有所幫助。

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