封装方法，获取url地址上的参数

jiangsihan.cn/?id=123&nam…

		getQueryVariable(variable) {
            var query = window.location.search.substring(1);
            var vars = query.split("&");
            for (var i = 0; i < vars.length; i++) {
                var pair = vars[i].split("=");
                if (pair[0] == variable) { return pair[1]; }
            }
            return (false);
        }

		this.getQueryVariable('id') //获取id
		this.getQueryVariable('name')  //获取name