HTML commonly used meta complete

Time:2021-7-29

HTML commonly used meta complete

Meta tag is an auxiliary tag in the head area of HTML language. It is located between the head tag and the title tag in the head of HTML document. It provides information invisible to users.

Meta: i.eMetadata (metadata)Is the data information of the data.

Metadata can be invoked using browsers (how to display content or reload pages), search engines (keywords), or other web services.

In our vernacular,It is a useless tag in itself, but once some effects are set through other attributes inside it, it will work, so we call it “metadata”

Code

<!--  Defines the character encoding of the document -- >
<meta charset="utf-8" /> 
<!--  Force chromium kernel to act on domestic dual core browsers such as 360 browser and QQ browser -- >
<meta name="renderer" content="webkit"/>
<!--  Force the chromium kernel to work on other dual core browsers -- >
<meta name="force-rendering" content="webkit"/>
<!--  If the Google chrome frame plug-in is installed, the chrome kernel is mandatory. Otherwise, the highest version of IE kernel supported by the machine is mandatory and works on IE browser -- >
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1"/>
<!-- 
    Set window size
    Width sets the width of the layout viewport as a positive integer or the string "width device"
    Initial scale sets the initial scaling value of the page, which is a number and can take decimals
    Minimum scale allows the minimum scaling value of the user, which is a number with decimals
    Maximum scale allows the maximum scaling value of the user, which is a number with decimals
    Shrink to fit = no this is required in ios9 for the previous attributes to work
    Height sets the height of the layout viewport. This property is not important to us and is rarely used
    Whether user scalable allows users to scale. The value is "no" or "yes". No means not allowed, and yes means allowed
-->
<meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
<!--  Page description -- >
< meta name = "description" content = "no more than 150 characters" / >
<!--  Page keywords -- >
<meta name="keywords" content=""/>
<!--  Web author -- >
<meta name="author" content="name, [email protected]"/>
<!-- 
    Search engine crawl
    All: the file will be retrieved and the links on the page can be queried; 
    None: the file will not be retrieved, and the links on the page cannot be queried;
    Index: the file will be retrieved; 
    Follow: links on the page can be queried; 
    Noindex: the file will not be retrieved; 
    Nofollow: links on the page cannot be queried. 
-->
<meta name="robots" content="index,follow"/>
<!--  Ignore the identification of numbers in the page as phone, ignore the identification of email -- >
<meta name="format-detection" content="telphone=no, email=no"/>

<!-- IOS begin -->
<!--  Title added to the home screen (IOS 6 new) - >
< meta name = "Apple Mobile Web App title" content = "title" >
<!--  When the website is added to the home screen quick start mode, the address bar can be hidden, which is only for Safari of IOS (the effect can not be seen on safari after ios7.0) - >
<meta name="apple-mobile-web-app-capable" content="yes"/>
<!--  Whether to enable webapp full screen mode and delete Apple's default toolbar and menu bar -- >
<meta name="apple-touch-fullscreen" content="yes"/>
<!--  Add smart app banner (IOS 6 + Safari) - >
<meta name="apple-itunes-app" content="app-id=myAppStoreID, affiliate-data=myAffiliateData, app-argument=myURL">
<!--  Set the color of Apple toolbar: the default value is default (white), which can be set to black and black translucent -- >
<meta name="apple-mobile-web-app-status-bar-style" content="black"/>
<!--  Don't let Baidu transcode -- >
<meta http-equiv="Cache-Control" content="no-siteapp" />
<!--  Optimized for handheld devices, mainly for some old browsers that do not recognize viewport, such as BlackBerry -- >
<meta name="HandheldFriendly" content="true">
<!--  Microsoft's old browser -- >
<meta name="MobileOptimized" content="320">
<!--  UC force vertical screen -- >
<meta name="screen-orientation" content="portrait">
<!--  QQ forced vertical screen -- >
<meta name="x5-orientation" content="portrait">
<!--  UC force full screen -- >
<meta name="full-screen" content="yes">
<!--  QQ forced full screen -- >
<meta name="x5-fullscreen" content="true">
<!--  UC application mode -- >
<meta name="browsermode" content="application">
<!--  Application Mode -- >
<meta name="x5-page-mode" content="app">
<!--  Windows Phone click No highlight -- >
<meta name="msapplication-tap-highlight" content="no">

<!-- 
    IOS icon begin 
    Icon when a website is added to the IOS desktop
-->
<!--  IPhone and iTouch, 57x57 pixels by default, must have -- >
<link rel="apple-touch-icon-precomposed" sizes="57x57" href="table_ico57.png">
<!--  Retina iPhone and retina iTouch, 114x114 pixels, may not be available, but it is recommended -- >
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="table_ico72.png">
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="table_ico114.png">
<!--  Retina iPad, 144x144 pixels, not available, but recommended -- >
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="table_ico144.png">

<!--  IOS startup screen begin -- >
<!--  IPad vertical 768 x 1004 (standard resolution) - >
<link rel="apple-touch-startup-image" sizes="768x1004" href="/splash-screen-768x1004.png"/>
<!--  IPad horizontal screen 1024x748 (standard resolution) - >
<link rel="apple-touch-startup-image" sizes="1024x748" href="/Default-Portrait-1024x748.png"/>
<!--  IPad vertical screen 1536x2008 (retina) - >
<link rel="apple-touch-startup-image" sizes="1536x2008" href="/splash-screen-1536x2008.png"/>
<!--  IPad horizontal screen 2048x1496 (retina) - >
<link rel="apple-touch-startup-image" sizes="2048x1496" href="/splash-screen-2048x1496.png"/>
<!--  IPhone / iPod touch vertical screen 320x480 (standard resolution) - >
<link rel="apple-touch-startup-image" href="/splash-screen-320x480.png"/>
<!--  IPhone / iPod touch vertical screen 640x960 (retina) - >
<link rel="apple-touch-startup-image" sizes="640x960" href="/splash-screen-640x960.png"/>
<!--  IPhone 5 / iPod touch 5 vertical screen 640x1136 (retina) - >
<link rel="apple-touch-startup-image" sizes="640x1136" href="/splash-screen-640x1136.png"/>
<!-- IOS end -->

<!--  Windows 8 tile color -- >
<meta name="msapplication-TileColor" content="#000"/>
<!--  Windows 8 tile icon -- >
<meta name="msapplication-TileImage" content="icon.png"/>
<!--  Add RSS subscription -- >
<link rel="alternate" type="application/rss+xml" href="/rss.xml"/>

<!--  Sns social tag begin -- >
<!--  Refer to microblog API -- >
< meta property = "og: type" content = "type" / >
< meta property = "og: URL" content = "URL address" / >
< meta property = "og: title" content = "title" / >
< meta property = "og: image" content = "picture" / >
< meta property = "og: description" content = "description" / >
<!--  Sns social tag end -- >

Low version IE browser access problem

Add the code to force the WebKit kernel. There is no IE compatibility problem when using domestic browsers to visit websites, and the number of IE visitors will be greatly reduced. However, it is still inevitable that some old computers will be accessed through low version IE browser. If we specifically carry out CSS hack for this small number of users, it will seriously increase our workload.

Moreover, since January 2016, Microsoft has stopped providing support and updates for versions below ie11. It has not been updated for so long. Low version ie not only has problems with CSS3 and HTML5 support, but also has security problems.

So, if we don’t support low version ie, what should these small users do?

We can use the if ie statement to add ie upgrade prompt to the website, prompt the user to upgrade the browser, or switch to a more advanced browser to visit again.

We can add a code to jump to the IE upgrade prompt page under the meta tab just now (jump when the IE version is lower than ie11), so as to prompt low version ie users to upgrade or change their browser when accessing.

The complete code for forcing WebKit kernel and prompting lower version ie access users to upgrade is as follows. Add this code to the < head > tag of the header template file:

<meta name="renderer" content="webkit"/>
<meta name="force-rendering" content="webkit"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
<script>/*@cc_on window.location.href="http://support.dmeng.net/upgrade-your-browser.html?referrer="+encodeURIComponent(window.location.href); @*/</script>

(@cc_ On is a conditional compilation statement unique to IE 10 and older versions, so it can be used to judge whether there are other ie versions except ie11.)

Because websites with low version ie are often wrong versions because they are incompatible with CSS3 and HTML5, the above code is added. When users with low version ie visit, they will jump to the upgrade prompt page to avoid unnecessary resource loading and reduce the website server overhead.

Test code

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <meta name="renderer" content="webkit"/>
    <meta name="force-rendering" content="webkit"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
    <script>/*@cc_on window.location.href="http://support.dmeng.net/upgrade-your-browser.html?referrer="+encodeURIComponent(window.location.href); @*/</script>
  </head>
  <body>
        <h1>Hello world</h1>
  </body>
</html>

Ie 11 will output normally

HTML commonly used meta complete

Ie 10 will see the following page

HTML commonly used meta complete

reference resources

Front end meta Usage Summary – Mr_ LIXP

Force the browser to use WebKit kernel speed mode through meta code (solve the problem that meta name = “renderer” content = “WebKit” does not work) – [AI Huanhuan]( https://blog.csdn.net/AiHuanh…

Meta settings of mobile web pages – Tianya passers-by