<!DOCTYPE html>
<html>
<head>
<title>jQuery彈出層 模態框</title>
<script src="./jquery.min.js" type="text/javascript"></script>
<style>
.btn{
height:100px;
}
.black_over{
display: none;
position: fixed;
width: 100%;
height: 100%;
background-color: black;
z-index:1001;
top: 0; /*不可或缺，至關重要*/
left: 0;
right: 0;
left: 0;
margin: auto;
background-color: rgba(0,0,0,0.8);
}
.white_content {
display: none;
position: fixed;
z-index:1002;
overflow: auto;
}
</style>
<script type="text/javascript">
$(function () {
//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 _windowHeight = $(window).height(),//獲取當前窗口高度
_windowWidth = $(window).width(),//獲取當前窗口寬度
_popupHeight = $("#"+show_div).height(),//獲取彈出層高度
_popupWeight = $("#"+show_div).width();//獲取彈出層寬度
_posiTop = (_windowHeight - _popupHeight)/2;
_posiLeft = (_windowWidth - _popupWeight)/2;
$("#"+show_div).css({"left": _posiLeft + "px","top":_posiTop + "px","display":"block"});//設置position
};
//關閉彈出層
function CloseDiv(show_div,bg_div)
{
document.getElementById(show_div).style.display='none';
document.getElementById(bg_div).style.display='none';
};
$(".btn").click(function () {
var src = $(this).attr("src");
$("#showcont").attr("src",src);
ShowDiv('MyDiv','fade')
});
$("#fade").click(function () {
CloseDiv('MyDiv','fade')
});
});
</script>
</head>
<body>
<!--<input id="Button1" type="button" value="點擊彈出層" onclick="ShowDiv('MyDiv','fade')" />-->
<!--圖片請換成自己的，點擊圖片彈出-->
<img src="tu.png" alt="sd" class="btn" >
<img src="pic.jpg" alt="sd" class="btn" >
<!--彈出層時背景層DIV-->
<div id="fade" class="black_over">
</div>
<!--彈出層的內容-->
<div id="MyDiv" class="white_content">
<img src="tu.png" alt="" id="showcont">
</div>
</body>
</html>
2補充
彈出遮罩層后禁止頁面滾動（可不寫）
方法一：
設置body的CSS樣式為
overflow:hidden
方法二：
$('.shade').bind( "touchmove", function (e) {
e.preventDefault();
});
方法三：
$("body,.main").height($(window).height()).css({
"overflow-y": "hidden"
});