微信二次分享bug解决

   function fnGetQueryString(key) { //正则获取url后面的参数值，如?env=dev&exp=123中可以通过fnGetQueryString('exp')=>得到123
            var reg = new RegExp("(^|&)" + key + "=([^&]*)(&|$)");
            var result = window.location.search.substr(1).match(reg);
            return result ? decodeURIComponent(result[2]) : false;
        };
        function funcUrlDel(name) {//删除url指定参数名并返回新的url
            var loca = window.location;
            var baseUrl = loca.origin + loca.pathname + "#/activity";
            var query = loca.search.substr(1);
            if (query.indexOf(name) > -1) {
                var obj = {};
                var arr = query.split("&");
                for (var i = 0; i < arr.length; i++) {
                    arr[i] = arr[i].split("=");
                    obj[arr[i][0]] = arr[i][1];
                };
                delete obj[name];
                var url = baseUrl + JSON.stringify(obj).replace(/[\"\{\}]/g, "").replace(/\:/g, "=").replace(/\,/g, "&");
                return url
            };
        };
        function refreshUrl() {//强制刷新到不带二次分享参数页面
            var url = "";
            if (fnGetQueryString('from')) {//from为微信二次分享自带参数
                url = funcUrlDel('from');
                if (fnGetQueryString('isappinstalled')) {//isappinstalled为微信二次分享自带参数 //截取去除isappinstalled参数后的地址
                    url=url.split('isappinstalled=0')[0];
                    window.location.href = url+'?activityId='+$routeParams.activityId+'&orgClueId='+$routeParams.orgClueId;
                } else {
                    window.location.href = url+'?activityId='+$routeParams.activityId+'&orgClueId='+$routeParams.orgClueId;
                }
            }
        };
        if (fnGetQueryString('from')||fnGetQueryString('isappinstalled')) {
            refreshUrl();
        }