Get relative URL from absolute URL

Question

I want to get the relative URL from an absolute URL in JavaScript using regex and the replace method.

I tried the following but it is not working:

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Answer 1

Don't use low-level stuff like regexp etc. These things have been solved by so many other people. Especially the edge cases.

Have a look at URI.js, it should do the job: http://medialize.github.io/URI.js/docs.html#relativeto

var uri = new URI("/relative/path");
// make path relative
var relUri = uri.relativeTo("/relative/sub/foo/sub/file"); // returns a new URI instance
// relUri == "../../../path"