地址解析中文乱码

function Params() {
            var pattern = /(\w*)=([a-zA-Z0-9\u4e00-\u9fa5]+)/ig,
                params = {}; //定义正则表达式和一个空对象
            decodeURIComponent(window.location.href, true).replace(pattern, function(a, b, c) {
                params[b] = c;
            });
            return params;
        }
        var params = Params();