<! DOCTYPE HTML> the H5 standard statement using HTML5 doctype, case-insensitive <head lang = "en"> standard wording lang attribute <meta charset = 'utf-8 '> statement documents the character encoding used <meta http- equiv = "X-UA-Compatible " content = "IE = edge, chrome = 1" /> priority to use the latest version of IE and Chrome <Meta name = "the description" Content = "no more than 150 characters" /> page description < meta name = "keywords" content = "" /> page keyword <meta name = "author" content = "name, [email protected]" /> pages of <meta name = "robots" content = "index, follow "/> search engine crawlers <meta name =" viewport "content =" initial-scale = 1, maximum-scale = 3, minimum-scale = 1, user-scalable = no "> add viewport for mobile devices <meta name = "apple-mobile-web- app-title" content = " title"> the iOS devices begin <meta name = "apple-mobile -web-app-capable" content = "yes" /> added to the title (iOS 6 new) after the main screen whether WebApp full-screen mode is enabled, delete the Apple default toolbars and menu bar < meta name = "apple-itunes- app" content = "app-id = myAppStoreID, affiliate-data = myAffiliateData, app-argument = myURL"> Add smart App App Banner banners the smart (the iOS 6+ Safari) <Meta name = "the Apple-Mobile-Web-App-Status-bar-style" Content = "Black" /> <Meta name = "format-Detection" Content = "Cellphone = NO, Email = NO" /> set Apple toolbar color < meta name = "renderer" content = "webkit"> enabled browser 360 speed mode (WebKit) <meta HTTP-equiv = "X--the UA-compatible" Content = "IE = Edge"> avoid IE compatibility mode <meta http-equiv = "Cache-Control " content = "no-siteapp" /> let Baidu transcoding <meta name=”HandheldFriendly” content=”true"> For the optimization of handheld devices, mainly for some old does not recognize the viewport of the browser, such as BlackBerry <meta name =" MobileOptimized "content =" 320 "> Microsoft's older browsers <meta name =" screen-orientation "content = "Portrait"> uc forced portrait <meta name = "X5-Orientation" Content = "Portrait"> QQ forced portrait <meta name = "Full-screen" Content = "yes"> UC force full-screen <meta name = "X5-fullscreen" Content = " to true "> QQ force full-screen <Meta name = "browsermode" Content = "file application"> the UC application mode <Meta name = "X5-Page-mODE" Content = "App"> QQ application mode <Meta name = "msapplication-TAP-highlight" Content = "nO"> Windows Phone no highlights click settings page does not cache <meta http-equiv=”pragma” content=”no-cache”> <meta http-equiv=”cache-control” content=”no-cache”> <meta http-equiv=”expires” content=”0″>