页面设置请在微信端打开链接

var ua = navigator.userAgent.toLowerCase();  
            var isWeixin = ua.indexOf('micromessenger') != -1;  
            var isAndroid = ua.indexOf('android') != -1;  
            var isIos = (ua.indexOf('iphone') != -1) || (ua.indexOf('ipad') != -1);  
            if (!isWeixin) {  
                document.head.innerHTML = '<title>抱歉，出错了</title><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0"><link rel="stylesheet" type="text/css" href="_css/weui.css">';  
                document.body.innerHTML = '<div class="weui_msg"><div class="weui_icon_area"><i class="weui_icon_info weui_icon_msg"></i></div><div class="weui_text_area"><h4 class="weui_msg_title">请在微信客户端打开链接</h4></div></div>';  
            } 

js初始化的时候，将如上代码放到js初始化的第一行；当打开网址的浏览器不是微信浏览器的话，就会弹出提示；