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JavaScript: URI/URL Parser

Parse a URI/URL location; separate the parameters, hashtag; automatically generate arrays for multiple valued parameters.

This is a great utility to parse a URI.

function parseURL(url) {
	var a = document.createElement('a');
	a.href = url;
	return {
		source: url,
		protocol: a.protocol.replace(':', ''),
		host: a.hostname,
		port: a.port,
		query: a.search,
		params: (function () {
			var ret = {};
			var seg = a.search.replace(/^\?/, '').split('&');
			var len = seg.length;
			var i = 0;
			var s;
			for (; i < len; i++) {
				if (!seg[i]) { continue; }
				s = seg[i].split('=');
				if (s.length == 2) {
					ret[s[0]] = decodeURIComponent(s[1].replace(/\+/g, '%20'));
				} else if (s.length == 1) {
					ret[s[0]] = null;
				}
			}
			return ret;
		})(),
		file: (a.pathname.match(/\/([^\/?#]+)$/i) || [, ''])[1],
		hash: a.hash.replace('#', ''),
		path: a.pathname.replace(/^([^\/])/, '/$1'),
		pathname: a.pathname,
		relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [, ''])[1],
		segments: a.pathname.replace(/^\//, '').split('/')
	};
}

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