Method isJSONString

ruilanCar.js:326–337

(str)

            return params;
        }
        isJSONString(str) {
            try {
                var obj = JSON.parse(str);
                if (typeof obj == 'object' && obj) {
                    return true;
                } else {
                    return false;
                }
            } catch (e) {
                return false;
            }
        }
        isJson(obj) {
            var isjson = typeof (obj) == "object" && Object.prototype.toString.call(obj).toLowerCase() == "[object object]" && !obj.length;
            return isjson;