URL 以双斜线开头 [英] URL starts with a double slash

问题描述

在过去几个月我看到的几个页面上，地址的语法如下

On several pages I saw in the last months following syntax for a address

<a href="//mynextpage.html">...</a>

这种网址方式有什么用?它是您调用此站点的协议的通配符吗?

What does this way of an url stay for? Is it a kind of wildcard for the protocol you have called this site?

推荐答案

这意味着，链接引用使用与当前页面相同的协议(http: 或 https:).如果你用 http 调用页面:链接也会转到 http:，如果你用 https 调用页面:链接也有 https.

It means, that the link reference uses the same protocol (http: or https:) like the current page. If you call the page with http: the link goes to http: as well, if you call the page with https: the link has https too.

这不仅对链接最有用，而且对图像、javascript 和其他外部资源最有用.它可以防止在大多数浏览器中引发警告的混合(加密/未加密)内容问题.

This is most useful not only for links but for images, javascript and other external resources. It prevents problems with mixed (encrypted/unencrypted) content which provokes warnings in most browsers.

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