How do I parse a URL into hostname and path in javascript?

The modern way:

new URL("https://example.com/aa/bb/")

Returns an object with properties hostname and pathname, along with a few others.

The first argument is a relative or absolute URL; if it’s relative, then you need to specify the second argument (the base URL). For example, for a URL relative to the current page:

new URL("/aa/bb/", location)

In addition to browsers, this API is also available in Node.js since v7, through require('url').URL.

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