将元描述和开放图协议描述组合为一个标记

Is it possible to combine the meta description and Open Graph Protocol description…

是否有可能合并元描述和开放图协议描述…

<meta name="description" content="My meta description copy." />
<meta property="og:description" content="My meta description copy." />

…into one when they contain the same content?

当它们包含相同的内容时?

<meta name="description" property="og:description" content="My meta description copy." />

2 个解决方案

#1

Yes, you can combine them. To test it, I made the simple HTML page below, uploaded it to a server, then ran the page through Facebook's URL Linter. It reported no warnings related to the description tag (only about the missing og:image tag) and correctly read the description.

是的，你可以合并它们。为了测试它，我制作了下面这个简单的HTML页面，将它上传到服务器上，然后通过Facebook的URL链接器运行这个页面。它没有报告任何与描述标记相关的警告(只报告丢失的og:图像标记)，并正确地读取描述。

<!doctype html>
<html>
    <head>
        <meta name="description" property="og:description" content="My meta description copy." />
        <meta property="og:title" content="Test page" />
        <meta property="og:type" content="article" />
        <meta property="og:url" content="http://example.com/ogtest.html" />
    </head>
    <body>
    Test
    </body>
</html>

Note that, if the og:url value is different to the current page url, Facebook will look for a description on that url instead of the current one and ignore the current page's description tag.

注意，如果og:url值与当前页面url不同，Facebook将查找该url上的描述而不是当前url，并忽略当前页面的描述标记。

It might also interest you to know that, even though it's possible to combine the two description tags, Facebook doesn't do this on their own website.

你可能也会感兴趣，即使你可以把这两个描述标签结合起来，Facebook在他们自己的网站上也不会这样做。

#2

Some additional info on why this is possible/allowed:

关于为什么这是可能的/允许的一些附加信息:

HTML+RDFa 1.1 extends HTML5’s meta element.

HTML+RDFa 1.1扩展了HTML5的meta元素。

HTML+RDFa 1.1 (W3C Recommendation) defines:

HTML+RDFa 1.1 (W3C推荐标准)定义:

If the RDFa @property attribute is present on the meta element, neither the @name, @http-equiv, nor @charset attributes are required and the @content attribute MUST be specified.

如果在元元素上存在RDFa @property属性，则不需要@name、@http-equiv和@charset属性，必须指定@content属性。

So when using RDFa's @property the name is not required but it is not forbidden either, making

因此，当使用RDFa的@property时，不需要名称，但也不禁止，创建

<meta name="description" property="og:description" content="great description">

perfectly ok according to spec.

根据规格完全可以。

I found this from the answer to this related question: Is it possible to use the same meta tag for opengraph and schema.org

我从这个相关问题的答案中发现了这一点:是否可能对opengraph和schema.org使用相同的meta标记

#1

<!doctype html>
<html>
    <head>
        <meta name="description" property="og:description" content="My meta description copy." />
        <meta property="og:title" content="Test page" />
        <meta property="og:type" content="article" />
        <meta property="og:url" content="http://example.com/ogtest.html" />
    </head>
    <body>
    Test
    </body>
</html>