js 根据 name 从地址栏信息中获取值

// 根据 name 从地址栏信息中获取值
function getQueryString(name) {
	var reg = new RegExp("(^|&?)" + name + "=([^&]*)(&|$)");
	var r = window.location.search.substr(1);
	console.log(r);
	var re = r.replace(/_Brackets/g, '{').replace(/Brackets_/g, '}');
	re = decodeURI(re);
	console.log(r);
	var res = re.match(reg);
	console.log(res);
	if (res != null) return unescape(res[2]);
	return null;
}