解析查询字符串

var res = parseQueryString('?id=3098&name=liSi');
        console.log(res)
        function parseQueryString(str) {
            var obj = {}
            if (str) {
                var tmp = str.slice(1).split('&')
                tmp.forEach(function (item) {
                    var t = item.split('=')
                    obj[t[0]] = t[1]
                })
            }
            return obj
        }