如何在JavaScript中提取URL的主机名部分 [英] How to extract the hostname portion of a URL in JavaScript

问题描述

是否有一种非常简单的方法可以从完整的URL开始：

Is there a really easy way to start from a full URL:

document.location.href = "http://aaa.bbb.ccc.com/asdf/asdf/sadf.aspx?blah"

并提取只是主持人部分：

And extract just the host part:

aaa.bbb.ccc.com

必须有一个能够可靠地执行此操作的JavaScript函数，但我找不到它。

There's gotta be a JavaScript function that does this reliably, but I can't find it.

推荐答案

假设您有一个包含以下地址的页面： http://sub.domain.com/virtualPath/page.htm 。在页面代码中使用以下内容来获得这些结果：

suppose that you have a page with this address: http://sub.domain.com/virtualPath/page.htm. use the following in page code to achive those results:

• window.location.host ：你将获得 sub.domain.com:8080 或 sub.domain.com:80


• window.location.hostname ：你将获得 sub.domain.com


• window.location.protocol ：你将获得 http：


• window.location.port ：你将获得 8080 或 80


• window.location.pathname ：你会得到 / virtualPath


• window.location.origin ：你会得到 http://sub.domain.com *****

• window.location.host : you'll get sub.domain.com:8080 or sub.domain.com:80
• window.location.hostname : you'll get sub.domain.com
• window.location.protocol : you'll get http:
• window.location.port : you'll get 8080 or 80
• window.location.pathname : you'll get /virtualPath
• window.location.origin : you'll get http://sub.domain.com *****

更新：关于.origin

*****作为 ref 表示， window.location.origin 的浏览器兼容性尚不清楚。我已经在chrome中检查了它并返回 http://sub.domain.com:port 如果端口不是80，那么 http ：//sub.domain.com 如果端口是80。

***** As the ref states, browser compatibility for window.location.origin is not clear. I've checked it in chrome and it returned http://sub.domain.com:port if the port is anything but 80, and http://sub.domain.com if the port is 80.

特别感谢@torazaburo向我提及。

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