Javascript URL parsing

這也忘記是從哪來的，沒記錯應該是 stackoverflow.com 上找到（有發現記得告訴我），這是個快速 parsing url 的方式，使用了 html 本身的功能來做 parser，效能上當然不用多說。

	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 = {},
	seg = a.search.replace(/^\?/,'').split('&'),
	len = seg.length, i = 0, s;
	for (;i<len;i++) {
	if (!seg[i]) { continue; }
	s = seg[i].split('=');
	ret[s[0]] = s[1];
	}
	return ret;
	})(),
	file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1],
	hash: a.hash.replace('#',''),
	path: a.pathname.replace(/^([^\/])/,'/$1'),
	relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],
	segments: a.pathname.replace(/^\//,'').split('/')
	};
	}

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