javaScript实现类似于java Map 集合的方式存储数据

javaScript实现类似于java Map 集合的方式存储数据

!(function (window) {
        /**
         * Map对象构造函数
         * @class
         * @constructor
         */
        var Map = function () {
            /**
             * 存档所有Key值的数组对象
             * @type {any[]|Array}
             */
            this.keys = new Array();
            /**
             * 存放数据对象
             * @type {Object}
             */
            this.values = new Object;
        }

        /**
         * 扩充Map对象方法
         * @type {{}}
         */
        Map.prototype = {
            /**
             * 存放键值对
             * @function
             * @param key
             * @param value
             */
            put: function (key, value) {
                if (!this.values[key])
                    this.keys.push(key);
                this.values[key] = value;
            },
            /**
             * 根据key值获取对象
             * @param key
             * @returns {*}
             */
            get: function (key) {
                return this.values[key];
            },
            /**
             * 根据key值删除对象
             * @param key
             */
            remove: function (key) {
                this.keys.remove(key);
                this.values[key] = null;
            },
            /**
             * 循环遍历，执行回调函数
             * @param fn 回调函数
             */
            each: function (fn) {
                if (typeof fn != 'function') {
                    return;
                }
                for (var i = 0;
                i < this.keys.length;
                i++
            )
                {
                    var k = this.keys[i];
                    fn(k, this.values[k], i);
                }
            },
            /**
             * 获取键值数组(类似Java的entrySet())
             * @return 键值对象{key,value}的数组
             */
            entrys: function () {
                var len = this.keys.length;
                var entrys = new Array(len);
                for (var i = 0; i < len; i++) {
                    entrys[i] = {
                        key: this.keys[i],
                        value: this.values[i]
                    };
                }
                return entrys;
            },

            /**
             * 判断Map是否为空
             */
            isEmpty: function () {
                return this.keys.length == 0;
            },

            /**
             * 获取键值对数量
             */
            size: function () {
                return this.keys.length;
            },

            /**
             * 重写toString
             */
            toString: function () {
                var s = "{";
                for (var i = 0; i < this.keys.length; i++, s += ',') {
                    var k = this.keys[i];
                    s += k + "=" + this.values[k];
                }
                s += "}";
                return s;
            }
        }

        window.Map = Map;
    })(window);

function getCusNumberName(cusNumber) {
        //创建Map对象
        var map = new Map();
		map.put("1100","北京");
		map.put("1101","上海");
		map.put("1102","广州");
		map.put("1103","深圳");
		map.put("1104","杭州");
		map.put("1105","天津");
		map.put("1120","重庆");
		var cusNumberName=map.get(cusNumber);
		return cusNumberName;
		}