js map用法实例

function mapPut(codeType){
    var hashMap = new Map();
    var url = "code/findCodeByCodeType";
    var jsonStr = "codeTypeName="+codeType;
    var obj = jsonSubmit(url,formToJson(jsonStr));
    $(obj).each(function(index) {
        var val = obj[index];
        hashMap.put(val.code,val.name);
        hashMap.parent(codeType);
    });
    return hashMap;
}

function Map() {
    this.objects = new Object();
    
    // 加入元素
    this.put = function (key, value) {
        this.objects[key] = value;
    };
    this.parent=function(parentName){   this.name = parentName;};
    this.name;
    // 删除元素
    this.remove = function (key) {
        this.objects[key] = undefined;
    };
    
    // 是否存在某键值
    this.containsKey = function (key) {
        return this.objects[key] ? true : false;
    };
    
    // 获取某元素
    this.get = function(key) {
        return this.objects[key];
    };
    
    // 是否存在某值
    this.containsValue = function (value) {
        for (var temp in this.objects) {
            if (this.objects[temp] == value) {
                return true;
            }
        }
        
        return false;
    };
    
    // 集合大小
    this.size = function () {
        var counter = 0;
        for (var temp in this.objects) {
            counter ++;
        }
        return counter;
    }
}