url.js

/**
 * var u = url('http://wenzhixin.net.cn:12345/test?name=wenzhixin#about');
 * console.log(u.protocol); // http:
 * console.log(u.hostname); // wenzhixin.net.cn
 * console.log(u.port); // 12345
 * console.log(u.pathname); // /test
 * console.log(u.search); // ?name=wenzhixin
 * console.log(u.hash); // #about
 */
function url(href) {
	var a = document.createElement('a');//or document.createElement('area')
	a.href = href;
	return a;
}