[英]Construct a relative path in JavaScript from two absolute paths
Given two absolute paths, eg给定两条绝对路径,例如
/var/data/stuff/xyz.html
/var/data
How to create a relative path that uses the second path as its base?如何创建以第二条路径为基础的相对路径? In the example above, the result would be: stuff/xyz.html
在上面的示例中,结果将是: stuff/xyz.html
Another example:另一个例子:
/relative/sub/foo/sub/file
/relative/path
../../../path
This is similar to this question but I'm looking for the optimal JavaScript solution instead of Java.这类似于这个问题,但我正在寻找最佳的 JavaScript 解决方案,而不是 Java。
If you're running this on the server with node.js: 如果您在node.js的服务器上运行它:
http://nodejs.org/api/path.html#path_path_relative_from_to http://nodejs.org/api/path.html#path_path_relative_from_to
This is their implementation: 这是他们的实施:
https://github.com/joyent/node/blob/master/lib/path.js#L233 https://github.com/joyent/node/blob/master/lib/path.js#L233
This should work in the browser without really any changes. 这应该在浏览器中工作而不需要任何更改。 It's been battle-tested, so it already handles edge cases.
它已经过战斗测试,所以它已经处理了边缘情况。 It's not a one-liner, but it works flawlessly, which I think is more important.
它不是一个单行,但它完美无缺,我认为更重要。 The POSIX version isn't bad, if that's the only think you need to support.
POSIX版本也不错,如果这是你唯一认为需要支持的版本。
JS URL API should handle this within the browser now: https://developer.mozilla.org/en-US/docs/Web/API/URL/URL JS URL API 现在应该在浏览器中处理这个问题: https://developer.mozilla.org/en-US/docs/Web/API/URL/
new URL(url, base)新网址(网址,基础)
// Base urls
let m = 'https://developer.mozilla.org';
let a = new URL("/", m); // => 'https://developer.mozilla.org/'
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