链接以两个斜杠开头 [英] Links start with two slashes

问题描述

越来越多，开始注意到网站上源代码中的链接以两个斜线开头.例如:

More and more, began to notice that the links in the source code on Web sites begin with two slashes. For example:

<a href="//example.com/1.png">Image</a>

为什么要这样做?

推荐答案

It's a protocol-relative URL(通常是 HTTP 或 HTTPS).因此，如果我在 http://example.org 上并链接(或包含图像、脚本等)到 //example.com/1.png，它转到 http://example.com/1.png.如果我在 https://example.org，它会转到 https://example.com/1.png.

It's a protocol-relative URL (typically HTTP or HTTPS). So if I'm on http://example.org and I link (or include an image, script, etc.) to //example.com/1.png, it goes to http://example.com/1.png. If I'm on https://example.org, it goes to https://example.com/1.png.

这可让您轻松避免混合内容安全错误.

This lets you easily avoid mixed content security errors.

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