url parsing 연습

url-parse.js

function parseUrl(url) {
	var tokens = /\?([\S]*)/.exec(url);
	if ( tokens === null ) return {};

	var urlToken = tokens[0].indexOf('#') !== -1 ? tokens[1].substring(0, tokens[1].indexOf('#')) : tokens[1];
	var params = urlToken.split('&').reduce(function(obj, v) {
		var tokens = v.split('='),
			k = tokens[0],
			v = tokens[1];
		if ( obj[k] ) {
			if ( Array.isArray(obj[k]) ) obj[k].push(v);
			else {
				obj[k] = [obj[k]];
				obj[k].push(v);
			}
		} else obj[k] = v;
		return obj;
	}, {});
	return {
		baseUrl:'',
		params:params
	};
}

var pureUrl = 'http://asdf.com';
var hashUrl = 'http://asdf.com#hash';
var hashWidhParameterUrl = 'http://asdf.com?a=1&b=2&c=3#hash';
var paramUrl = 'http://asdf.com?a=2&b=2&b=3';

console.log(pureUrl, parseUrl(pureUrl));
console.log(hashUrl, parseUrl(hashUrl));
console.log(hashWidhParameterUrl, parseUrl(hashWidhParameterUrl));
console.log(paramUrl, parseUrl(paramUrl));