经常用到的meta标签
<!DOCTYPE html>
<!-- 使用 HTML5 doctype，不区分大小写 -->
<html lang = "zh-cmn-Hans">
<!-- 更加标准的 lang 属性写法 http://zhi.hu/XyIa -->
<head>
<!-- 声明文档使用的字符编码 -->
<meta charset = 'utf-8'>
<!-- 优先使用 IE 最新版本和 Chrome -->
<meta http-equiv = "X-UA-Compatible" content = "IE=edge,chrome=1"/>
<!-- 页面描述 -->
<meta name = "description" content = "不超过150个字符"/>
<!-- 页面关键词 -->
<meta name = "keywords" content = ""/>
<!-- 网页作者 -->
<meta name = "author" content = "name, email@gmail.com"/>
<!-- 搜索引擎抓取 -->
<meta name = "robots" content = "index,follow"/>
<!-- 为移动设备添加 viewport -->
<meta name = "viewport" content = "initial-scale=1, maximum-scale=3, minimum-scale=1, user-scalable=no">
<!-- `width=device-width` 会导致 iPhone 5 添加到主屏后以 WebApp 全屏模式打开页面时出现黑边 http://bigc.at/ios-webapp-viewport-meta.orz -->
<!-- iOS 设备 begin -->
<meta name = "apple-mobile-web-app-title" content = "标题">
<!-- 添加到主屏后的标题（iOS 6 新增） -->
<meta name = "apple-mobile-web-app-capable" content = "yes"/>
<!-- 是否启用 WebApp 全屏模式，删除苹果默认的工具栏和菜单栏 -->
<meta name = "apple-itunes-app" content = "app-id=myAppStoreID, affiliate-data=myAffiliateData, app-argument=myURL">
<!-- 添加智能 App 广告条 Smart App Banner（iOS 6+ Safari） -->
<meta name = "apple-mobile-web-app-status-bar-style" content = "black"/>
<!-- 设置苹果工具栏颜色 -->
<meta name = "format-detection" content = "telphone=no, email=no"/>
<!-- 忽略页面中的数字识别为电话，忽略email识别 -->
<!-- 启用360浏览器的极速模式(webkit) -->
<meta name = "renderer" content = "webkit">
<!-- 避免IE使用兼容模式 -->
<meta http-equiv = "X-UA-Compatible" content = "IE=edge">
<!-- 不让百度转码 -->
<meta http-equiv = "Cache-Control" content = "no-siteapp" />
<!-- 针对手持设备优化，主要是针对一些老的不识别viewport的浏览器，比如黑莓 -->
<meta name = "HandheldFriendly" content = "true">
<!-- 微软的老式浏览器 -->
<meta name = "MobileOptimized" content = "320">
<!-- uc强制竖屏 -->
<meta name = "screen-orientation" content = "portrait">
<!-- QQ强制竖屏 -->
<meta name = "x5-orientation" content = "portrait">
<!-- UC强制全屏 -->
<meta name = "full-screen" content = "yes">
<!-- QQ强制全屏 -->
<meta name = "x5-fullscreen" content = "true">
<!-- UC应用模式 -->
<meta name = "browsermode" content = "application">
<!-- QQ应用模式 -->
<meta name = "x5-page-mode" content = "app">
<!-- windows phone 点击无高光 -->
<meta name = "msapplication-tap-highlight" content = "no">
<!-- iOS 图标 begin -->
<link rel = "apple-touch-icon-precomposed" href = "/apple-touch-icon-57x57-precomposed.png"/>
<!-- iPhone 和 iTouch，默认 57x57 像素，必须有 -->
<link rel = "apple-touch-icon-precomposed" sizes = "114x114" href = "/apple-touch-icon-114x114-precomposed.png"/>
<!-- Retina iPhone 和 Retina iTouch，114x114 像素，可以没有，但推荐有 -->
<link rel = "apple-touch-icon-precomposed" sizes = "144x144" href = "/apple-touch-icon-144x144-precomposed.png"/>
<!-- Retina iPad，144x144 像素，可以没有，但推荐有 -->
<!-- iOS 图标 end -->
<!-- iOS 启动画面 begin -->
<link rel = "apple-touch-startup-image" sizes = "768x1004" href = "/splash-screen-768x1004.png"/>
<!-- iPad 竖屏 768 x 1004（标准分辨率） -->
<link rel = "apple-touch-startup-image" sizes = "1536x2008" href = "/splash-screen-1536x2008.png"/>
<!-- iPad 竖屏 1536x2008（Retina） -->
<link rel = "apple-touch-startup-image" sizes = "1024x748" href = "/Default-Portrait-1024x748.png"/>
<!-- iPad 横屏 1024x748（标准分辨率） -->
<link rel = "apple-touch-startup-image" sizes = "2048x1496" href = "/splash-screen-2048x1496.png"/>
<!-- iPad 横屏 2048x1496（Retina） -->
<link rel = "apple-touch-startup-image" href = "/splash-screen-320x480.png"/>
<!-- iPhone/iPod Touch 竖屏 320x480 (标准分辨率) -->
<link rel = "apple-touch-startup-image" sizes = "640x960" href = "/splash-screen-640x960.png"/>
<!-- iPhone/iPod Touch 竖屏 640x960 (Retina) -->
<link rel = "apple-touch-startup-image" sizes = "640x1136" href = "/splash-screen-640x1136.png"/>
<!-- iPhone 5/iPod Touch 5 竖屏 640x1136 (Retina) -->
<!-- iOS 启动画面 end -->
<!-- iOS 设备 end -->
<meta name = "msapplication-TileColor" content = "#000"/>
<!-- Windows 8 磁贴颜色 -->
<meta name = "msapplication-TileImage" content = "icon.png"/>
<!-- Windows 8 磁贴图标 -->
<link rel = "alternate" type = "application/rss+xml" title = "RSS" href = "/rss.xml"/>
<!-- 添加 RSS 订阅 -->
<link rel = "shortcut icon" type = "image/ico" href = "/favicon.ico"/>
<!-- 添加 favicon icon -->
<!-- sns 社交标签 begin -->
<!-- 参考微博API -->
<meta property = "og:type" content = "类型" />
<meta property = "og:url" content = "URL地址" />
<meta property = "og:title" content = "标题" />
<meta property = "og:image" content = "图片" />
<meta property = "og:description" content = "描述" />
<!-- sns 社交标签 end -->
<title>标题</title></head>
