关于meta

1、天猫(http://m.tmall.com)<title>天猫触屏版</title> <meta content="text/html; charset=utf-8" http-equiv="Content-Type">     <meta charset="utf-8">             <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport">     <meta content="yes" name="apple-mobile-web-app-capable">     <meta content="black" name="apple-mobile-web-app-status-bar-style">     <meta content="telephone=no" name="format-detection">2、淘宝(http://m.taobao.com)<title>淘宝网触屏版</title><meta charset="utf-8"><meta content="yes" name="apple-mobile-web-app-capable"><meta content="yes" name="apple-touch-fullscreen"><meta content="telephone=no" name="format-detection"><meta content="black" name="apple-mobile-web-app-status-bar-style"><meta property="wb:webmaster" content="c51923015ca19eb1"><meta name="author" content="m.taobao.com"><meta name="copyright" content="Copyright ©m.taobao.com 版权所有"><meta name="revisit-after" content="1 days"><meta name="keywords" content=""><meta name="description" content="">3、京东(http://m.jd.com)<title> 京东 - 手机版 </title><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0;"><meta name="format-detection" content="telephone=no"><meta name="Keywords" content="手机购物,WAP商城,日用百货,3C家电,汽车用品"><meta name="description" content="京东手机版提供了包括数码、家电、手机、电脑配件、网络产品、日用百货等数万种商品，手机快捷购物，就上京东手机版。">4、网易(http://3g.163.com)<title>手机网易网</title><meta charset="UTF-8"><meta content="width=device-width,user-scalable=no" name="viewport"><meta name="apple-itunes-app" content="app-id=425349261"><meta name="apple-mobile-web-app-capable" content="yes">5、百度(http://m.baidu.com)<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no"><meta name="format-detection" content="telephone=no">