没有“http|https"的网址 [英] URL without "http|https"

问题描述

我刚刚从一位同事那里了解到，在链接中省略 URL 的http | https"部分将使该 URL 使用其所在页面使用的任何方案.

例如，如果我的页面是通过 http://www.example.com 访问的，并且我有一个链接(注意'//' 在前面):

<a href="//www.google.com">Google</a>

该链接将转到 http://www.google.com.

但是如果我使用相同的链接访问 https://www.example.com 上的页面，它将转到 https://www.google.com

我想在网上查找有关这方面的更多信息，但想不出合适的搜索词组.如果我搜索没有 HTTP 的 URL"，返回的页面是关于具有以下形式的 url:www.example.com"，这不是我要查找的内容.

您会称其为无方案 URL 吗?无协议的 URL?

这是否适用于所有浏览器?我在 FF 和 IE 8 中对其进行了测试，并且在两者中都有效.这是标准的一部分，还是我应该测试更多浏览器?

解决方案

协议相对 URL

您可能会在某些浏览器中收到不寻常的安全警告.

另请参阅维基百科协议相关网址，了解简要定义.>

有一次，有人推荐；但展望未来，应该避免.

另见堆栈溢出问题 为什么要使用相对协议的 URL?.

I just learned from a colleague that omitting the "http | https" part of a URL in a link will make that URL use whatever scheme the page it's on uses.

So for example, if my page is accessed at http://www.example.com and I have a link (notice the '//' at the front):

<a href="//www.google.com">Google</a>

That link will go to http://www.google.com.

But if I access the page at https://www.example.com with the same link, it will go to https://www.google.com

I wanted to look online for more information about this, but I'm having trouble thinking of a good search phrase. If I search for "URLs without HTTP" the pages returned are about urls with this form: "www.example.com", which is not what I'm looking for.

Would you call that a schemeless URL? A protocol-less URL?

Does this work in all browsers? I tested it in FF and IE 8 and it worked in both. Is this part of a standard, or should I test more browsers?

解决方案

Protocol relative URL

You may receive unusual security warnings in some browsers.

See also, Wikipedia Protocol-relative URLs for a brief definition.

At one time, it was recommended; but going forward, it should be avoided.

See also the Stack Overflow question Why use protocol-relative URLs at all?.

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