JS实现点击图片可弹出大图

如题,使用Javascript,实现点击图片可弹出大图,大图可关闭?
新手求问!
谢谢

你说的是lightBox效果吧 ? 给你段代码:

 <!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
    <title>Lightbox效果</title>
    <style type="text/css">
    .black_overlay{
        display: none;
        position: absolute;
        top: 0%;left: 0%;
        width: 100%;
        height: 100%;
        background-color: black;
        z-index: 1001;
        opacity: .70;
    }
    .white_content{
        display: none;
        position: absolute;
        top: 30%;
        left: 30%;
        width: 40%;
        height: 40%;
        padding: 16px;
        border: 16px solid orange;
        background-color: white;
        z-index: 1002;
        overflow: auto;
    }
</style>
</head>
<body>
<a href="javascript:void(0)" 
    onclick="document.getElementById('light').style.display='block';
    document.getElementById('fade').style.display='block'">请单击这里</a>

<div id="light" class="white_content">
    这里是lightbox的弹出框的内容
<a href="javascript:void(0)" 
    onclick="document.getElementById('light').style.display='none';
    document.getElementById('fade').style.display='none'">关闭</a>
</div>
<div id="fade" class="black_overlay"></div>
</body>
</html>

fancybox

visuallightbox

colorbox等等。。