mis.comm.js.Map = function() {

    this.elements = new Array();

    //获取MAP元素个数

    this.size = function() {

        return this.elements.length;

    }

    //推断MAP是否为空

    this.isEmpty = function() {

        return (this.elements.length < 1);

    }

    //删除MAP全部元素

    this.clear = function() {

        this.elements = new Array();

    }

    //向MAP中添加元素（key, value)

    this.put = function(_key, _value) {

        this.elements.push( {

            key : _key,

            value : _value

        });

    }

    //删除指定KEY的元素，成功返回True，失败返回False

    this.remove = function(_key) {

        var bln = false;

        try {

            for (i = 0; i < this.elements.length; i++) {

                if (this.elements[i].key == _key) {

                    this.elements.splice(i, 1);

                    return true;

                }

            }

        } catch (e) {

            bln = false;

        }

        return bln;

    }

    //获取指定KEY的元素值VALUE，失败返回NULL

    this.get = function(_key) {

        try {

            for (i = 0; i < this.elements.length; i++) {

                if (this.elements[i].key == _key) {

                    return this.elements[i].value;

                }

            }

        } catch (e) {

            return null;

        }

    }

    //获取指定索引的元素（使用element.key，element.value获取KEY和VALUE），失败返回NULL

    this.element = function(_index) {

        if (_index < 0 || _index >= this.elements.length) {

            return null;

        }

        return this.elements[_index];

    }

    //推断MAP中是否含有指定KEY的元素

    this.containsKey = function(_key) {

        var bln = false;

        try {

            for (i = 0; i < this.elements.length; i++) {

                if (this.elements[i].key == _key) {

                    bln = true;

                }

            }

        } catch (e) {

            bln = false;

        }

        return bln;

    }

    //推断MAP中是否含有指定VALUE的元素

    this.containsValue = function(_value) {

        var bln = false;

        try {

            for (i = 0; i < this.elements.length; i++) {

                if (this.elements[i].value == _value) {

                    bln = true;

                }

            }

        } catch (e) {

            bln = false;

        }

        return bln;

    }

    //获取MAP中全部VALUE的数组（ARRAY）

    this.values = function() {

        var arr = new Array();

        for (i = 0; i < this.elements.length; i++) {

            arr.push(this.elements[i].value);

        }

        return arr;

    }

    //获取MAP中全部KEY的数组（ARRAY）

    this.keys = function() {

        var arr = new Array();

        for (i = 0; i < this.elements.length; i++) {

            arr.push(this.elements[i].key);

        }

        return arr;

    }

}