可以了，但是为什么第一次点击会出现弹出提示，再次点击就无任何反应呢？
完整代码
<!DOCTYPE html>
<html lang="zh_CN">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="description" content="">
<meta name="keywords" content="">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="renderer" content="webkit">
<script type='text/javascript' src='http://libs.baidu.com/jquery/1.9.1/jquery.min.js?ver=lastest'></script>
</head>
<body>
<style type="text/css">
*{margin:0; padding:0;}
a{text-decoration: none;}
img{max-width: 100%; height: auto;}
.weixin-tip{display:none;position:fixed;left:0;top:0;background:rgba(0,0,0,0.8);filter:alpha(opacity=80);width:100%;height:100%;z-index:100;}
.weixin-tip p{text-align:center;margin-top:10%;padding:0 5%;position:relative;}
.weixin-tip .close{color:#fff;padding:5px;font:bold 20px/24px simsun;text-shadow:0 1px 0 #ddd;position:absolute;top:0;left:5%;}
</style>
<article class="content"> <br />
<br />
<br />
<br />
<br />
<a class="android-btn" href="http://bbs.csdn.net/topics/391918286"><img src="http://caibaojian.com/demo/2015/3/register/img/android-btn.png" alt="安卓版下载" /></a> <br />
<br />
<a class="android-btn" href="http://bbs.csdn.net/topics/391918286"><img src="http://caibaojian.com/demo/2015/3/register/img/android-btn.png" alt="安卓版下载" /></a> <br />
<br />
<a class="android-btn" href="http://bbs.csdn.net/topics/391918286"><img src="http://caibaojian.com/demo/2015/3/register/img/android-btn.png" alt="安卓版下载" /></a> <br />
<br />
<a class="android-btn" href="http://bbs.csdn.net/topics/391918286"><img src="http://caibaojian.com/demo/2015/3/register/img/android-btn.png" alt="安卓版下载" /></a> <br />
<br />
<br />
<br />
</article>
<div class="weixin-tip">
<p> <img src="http://s.libaijie.com/jwap/images/android_tips.png" alt="在浏览器打开"/><span id="close" title="关闭" class="close" onclick="$(this).closest('div').remove()">×</span> </p>
</div>
<script type="text/javascript">
$(window).on("load",function(){
var winHeight = $(window).height();
function is_weixin() {
var ua = navigator.userAgent.toLowerCase();
if (ua.match(/MicroMessenger/i) == "micromessenger") {
return true;
} else {
return false;
}
}
var isWeixin = is_weixin();
$("article.content a").click(function(){
if(isWeixin){
$(".weixin-tip").css("height",winHeight);
$(".weixin-tip").show();
return false;
}
});
})
</script>
</body>
</html>
