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Hello
Algorithm
Note
Mark
Tools
AI

Doctype

Doctype

<!doctype html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

meta

<meta charset="UTF-8">

<!-- 页面关键词 -->
<meta name="keywords" content=""/>
<!-- 页面描述 -->
<meta name="description" content="网站介绍"/>
<meta name ="viewport" content ="initial-scale=1, maximum-scale=3, minimum-scale=1, user-scalable=no">

<!-- 优先使用 IE 最新版本和 Chrome -->
<meta http-equiv="X-UA-Compatible" content="IE=edge">


<!-- mobile -->
<!-- 忽略数字自动识别为电话号码； -->
<meta name="format-detection" content="telephone=no" />
<!-- 忽略数字自动识别为邮箱 -->
<meta name="format-detection" content="email=no">

<!-- ios -->
<!-- 添加到主屏后设置状态栏的背景颜色； -->
<meta content="black" name="apple-mobile-web-app-status-bar-style">
<!-- 添加到主屏后的标题（iOS 6 新增） -->
<meta name="apple-mobile-web-app-title" content="标题">
<!-- 启动WebApp全屏模式； -->
<meta name="apple-mobile-web-app-capable" content="yes" />

<!-- 搜索引擎抓取 -->
<meta name="robots" content="index,follow"/>

<!-- 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 -->

<!-- Theme Color for Chrome, Firefox OS and Opera -->
<meta name="theme-color" content="#4285f4">

<!-- Windows Phone -->
<meta name="msapplication-navbutton-color" content="#4285f4">

<!-- Security -->
<meta http-equiv="Content-Security-Policy" content="default-src 'self'">
<meta http-equiv="X-Content-Type-Options" content="nosniff">

<!-- PWA -->
<link rel="manifest" href="/manifest.json">
<meta name="mobile-web-app-capable" content="yes">

<!-- Favicon -->
<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
<link rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5">
<meta name="msapplication-TileColor" content="#da532c">

<!-- DNS Prefetch -->
<link rel="dns-prefetch" href="//fonts.googleapis.com">
<link rel="dns-prefetch" href="//www.google-analytics.com">

<!-- Preconnect -->
<link rel="preconnect" href="https://fonts.gstatic.com/" crossorigin>

link

<!-- 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 -->