meta tag function
The META tag is a key tag in the HEAD area of HTML tags. It provides basic information such as document character set, language, author, etc., as well as settings for keywords and web page levels. Its greatest role is to enable search engine optimization (SEO) .
PS: It is convenient for search engine robots to search and classify, so Internet applications should pay attention to it.
How to write on big websites?
Before learning about this tag, I searched various mainstream websites for their Meta settings, as follows:
Meta settings for JD homepage:
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="gbk"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="京东JD.COM-专业的综合网上购物商城,销售家电、数码通讯、电脑、家居百货、服装服饰、母婴、图书、食品等数万个品牌优质商品.便捷、诚信的服务，为您提供愉悦的网上购物体验!"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="Keywords"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="网上购物,网上商城,手机,笔记本,电脑,MP3,CD,VCD,DV,相机,数码,配件,手表,存储卡,京东"</span><span style="color: #0000ff;">></span>
Meta settings of Taobao homepage:
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="utf-8"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=edge,chrome=1"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="webkit"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="spm-id"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="a21bo"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="淘宝网 - 亚洲最大、最安全的网上交易平台，提供各类服饰、美容、家居、数码、话费/点卡充值… 8亿优质特价商品，同时提供担保交易(先收货后付款)、先行赔付、假一赔三、七天无理由退换货、数码免费维修等安全交易保障服务，让你全面安心享受网上购物乐趣！"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keyword"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">=""</span><span style="color: #0000ff;">></span>
Youku homepage Meta settings:
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="utf-8"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=Edge"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="title"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="优酷-中国领先视频网站,提供视频播放,视频发布,视频搜索 - 优酷视频"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keywords"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="视频,视频分享,视频搜索,视频播放,优酷视频"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="视频服务平台,提供视频播放,视频发布,视频搜索,视频分享"</span> <span style="color: #0000ff;">/></span>
Meta settings of Douyu homepage:
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html; charset=utf-8"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="webkit|ie-comp|ie-stand"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=Edge,chrome=1"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keywords"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="DOTA2,热门游戏直播,游戏直播,高清游戏直播,手机游戏直播,电子竞技直播"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="斗鱼 - 全民直播平台提供高清、快捷、流畅的视频直播和游戏赛事直播服务，包含DOTA2等各类热门游戏赛事直播和各种名家大神游戏直播，内容丰富，推送及时，带给你不一样的视听体验，一切尽在斗鱼 - 全民直播平台。"</span> <span style="color: #0000ff;">/></span>
Meta settings of Tencent homepage:
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="UTF-8"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="webkit"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=edge,chrome=1"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keywords"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="新闻 新闻中心 事实派 新闻频道,时事报道"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="腾讯新闻，事实派。新闻中心,包含有时政新闻、国内新闻、国际新闻、社会新闻、时事评论、新闻图片、新闻专题、新闻论坛、军事、历史、的专业时事报道门户网站"</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="author"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="skeetershi"</span> <span style="color: #0000ff;">/></span>
Meta settings on the homepage of Qidian Novel Network:
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keywords"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="小说,小说网,言情小说,青春小说,玄幻小说,武侠小说,都市小说,历史小说,网络小说,原创网络文学"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="小说阅读,精彩小说尽在起点小说。起点小说提供玄幻小说,武侠小说,原创小说,网游小说,都市小说,言情小说,青春小说,历史小说,军事小说,网游小说,科幻小说,恐怖小说,首发小说最新章节免费小说阅读,精彩尽在起点小说！ver:071011热门小说:。"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> id</span><span style="color: #0000ff;">="meta_ContentType"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html;charset=UTF-8"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="robots"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="all"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="googlebot"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="all"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="baiduspider"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="all"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="copyright"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="本页版权 www.qidian.com 起点中文网所有。All Rights Reserved"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="mobile-agent"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="format=wml; url=http://m.qidian.com"</span> <span style="color: #0000ff;">/><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="mobile-agent"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="format=xhtml; url=http://m.qidian.com"</span> <span style="color: #0000ff;">/><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="mobile-agent"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="format=html5; url=http://h5.qidian.com/bookstore.html"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="application-name"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="起点中文小说网"</span><span style="color: #ff0000;"> / <meta name</span><span style="color: #0000ff;">="msapplication-starturl"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="/Default.aspx?_s=ie9"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="msapplication-tooltip"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="小说阅读_起点中文小说网|免费小说,玄幻小说,武侠小说,言情小说,青春小说,小说网各类小说下载"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="msapplication-task"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="name=起点小游戏;action-uri=http://game.qidian.com/?_s=ie9;icon-uri=http://www.qidian.com/Images/ie9/game.ico"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="msapplication-task"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="name=藏书架;action-uri=http://me.qidian.com/BookCase/1/1?_s=ie9;icon-uri=http://www.qidian.com/Images/ie9/book.ico"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="msapplication-task"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="name=读书客户端;action-uri=http://c.qidian.com/android/?_s=ie9;icon-uri=http://www.qidian.com/Images/ie9/phone.ico"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="msapplication-task"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="name=排行榜;action-uri=http://top.qidian.com/?_s=ie9;icon-uri=http://www.qidian.com/Images/ie9/chart.ico"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="msapplication-task"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="name=搜索;action-uri=http://sosu.qidian.com/?_s=ie9;icon-uri=http://www.qidian.com/Images/ie9/search.ico"</span> <span style="color: #0000ff;">/></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">property</span><span style="color: #0000ff;">="qc:admins"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="204236767661141166375"</span> <span style="color: #0000ff;">/></span>
meta detailed explanation
meta tag can be divided into two parts: http-equiv and name variable.
http-equiv
http-equiv is equivalent to the file header of http. It can send some useful information back to the browser to help the browser display web page content correctly.
| Value | Description | Example |
| content-type | Set the character set used by the page |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html; charset=utf-8"</span><span style="color: #0000ff;">></span> Copy after login When GB2312 is used, the representative indicates that the encoding used by the website is Simplified Chinese;
When ISO-8859-1 is used, the representative indicates that the encoding used by the website is English;
UTF-8 represents the world’s universal language encoding;
PS: The way to use html5 pages is to directly use
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| X-UA-Compatible | Special tag for IE8, used to specify the IE8 browser to simulate the rendering method of a specific version of IE browser, in order to solve some compatibility issues. |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=7"</span><span style="color: #0000ff;">></span> Copy after login <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=8"</span><span style="color: #0000ff;">></span> Copy after login <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=edge"</span><span style="color: #0000ff;">></span> Copy after login <span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=Edge,chrome=1"</span><span style="color: #0000ff;">></span> Copy after login The above code IE=edge tells IE to use the latest engine to render web pages, and chrome=1 can activate Chrome Frame.
PS: Google has added a plug-in: Google Chrome Frame (Google Embedded Browser Framework GCF). This plug-in can keep the user's IE browser unchanged, but when the user browses the web, he is actually using the Google Chrome browser. kernel, and supports multiple versions of IE browsers such as IE6, 7, and 8.
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| expires | Set the expiration time of the web page. |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="expires"</span><span style="color: #ff0000;">content</span><span style="color: #0000ff;">="Fri,12Jan200118:18:18GMT"</span><span style="color: #0000ff;">></span> Copy after login PS: GMT time format must be used
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| refresh | Automatically refresh and point to new page. |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Refresh"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="2;URL=https://www.baidu.com"</span><span style="color: #0000ff;">></span> Copy after login PS: 2 means the page stays for 2 seconds and then jumps to the following URL
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| set-cookie | If the web page expires, local cookies are automatically deleted. |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Set-Cookie"</span><span style="color: #ff0000;">content</span><span style="color: #0000ff;">="cookie value=xxx;expires=Friday,12-Jan-200118:18:18GMT；path=/"</span><span style="color: #0000ff;">></span> Copy after login PS: GMT time format must be used.
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| windows-target | Force the page to be displayed as an independent page in the current window, which can prevent your own web page from being called as a frame page by others |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Window-target"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="_top"</span><span style="color: #0000ff;">></span> Copy after login |
| cache-control | Caching mechanism |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="cache-control"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="no-cache"</span><span style="color: #0000ff;">></span> Copy after login Public: Indicates that the response can be cached by any cache.
Private：指示对于单个用户的整个或部分响应消息，不能被共享缓存处理。这允许服务器仅仅描述当用户的部分响应消息，此响应消息对于其他用户的请求无效。
no-cache：指示请求或响应消息不能缓存。
no-store：用于防止重要的信息被无意的发布。在请求消息中发送将使得请求和响应消息都不使用缓存。
max-age：指示客户机可以接收生存期不大于指定时间（以秒为单位）的响应。
min-fresh：指示客户机可以接收响应时间小于当前时间加上指定时间的响应。
max-stale：指示客户机可以接收超出超时期间的响应消息。如果指定max-stale消息的值，那么客户机可以接收超出超时期指定值之内的响应消息。
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name
name属性主要用于描述网页，与之对应的属性值为content，content中的内容主要是便于搜索引擎机器人查找信息和分类信息用的。
| 值 | 描述 | 例子 |
| author | 标注网页的作者 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="author"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="dashen"</span> <span style="color: #0000ff;">/></span> Copy after login |
| keywords | 页面关键词，用于被搜索引擎收录 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keywords"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="新闻,新闻中心, 新闻频道"</span><span style="color: #0000ff;">></span> Copy after login |
| description | 页面描述，用于搜索引擎收录 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="description"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="新闻中心,包含有时政新闻、国内新闻、国际新闻、社会新闻、时事评论、新闻图片、新闻专题、新闻论坛、军事、历史、的专业时事报道门户网站"</span><span style="color: #0000ff;">></span> Copy after login |
| viewport | 用于控制页面缩放 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="viewport"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="width=device-width, initial-scale=1, <br />maximum-scale=1, minimum-scale=1, user-scalable=no"</span><span style="color: #0000ff;">></span> Copy after login |
| renderer | 指定双核浏览器默认以何种方式渲染页面。 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="webkit"</span><span style="color: #0000ff;">></span><span style="color: #000000;">//默认webkit内核 </span><span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="ie-comp"</span><span style="color: #0000ff;">></span><span style="color: #000000;">//默认IE兼容模式 </span><span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="ie-stand"</span><span style="color: #0000ff;">></span>//默认IE标准模式 Copy after login PS：360浏览器支持
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| generator | 说明网站的采用的什么软件制作 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="generator"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="Microsoft"</span><span style="color: #0000ff;">/></span> Copy after login |
| revised | 网页文档的修改时间 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="revised"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="设计网, 6/24/2015"</span><span style="color: #0000ff;">/></span> Copy after login |
| robots | 用来告诉搜索机器人哪些页面需要索引，哪些页面不需要索引。 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="robots"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="none"</span><span style="color: #0000ff;">/></span> Copy after login 取值：all|none|index|noindex|follow|nofollow, 默认all
all：文件将被检索，且页面上的链接可以被查询；
none：文件将不被检索，且页面上的链接不可以被查询；
index：文件将被检索；
follow：页面上的链接可以被查询；
noindex：文件将不被检索，但页面上的链接可以被查询；
nofollow：文件将不被检索，页面上的链接可以被查询。
|
| copyright | 网站版权信息 |
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="copyright"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="本页版权XXX所有。All Rights Reserved"</span> <span style="color: #0000ff;">/></span> Copy after login |
总结
通过大网站对于meta的设置，可以看到常用的有，X-UA-Compatible、keywords、description。
参考文献
1. http://www.haorooms.com/post/html_meta_ds
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
