js键值对对象

<script type="text/javascript">
function getKeyVal() {
var _KeyVal = new Object();
_KeyVal.set = function (key, value) {
if (arguments.length >= 2) {
this[arguments[0]] = arguments[1];
}
};
_KeyVal.get = function (key) {
if (this.hasOwnProperty(arguments[0])) {
return this[arguments[0]];
}
};
_KeyVal.remove = function (key) {
if (this.hasOwnProperty(arguments[0])) {
delete this[arguments[0]];
}
};
_KeyVal.clear = function () {
for (var e in this) {
delete this[e];
}
};
_KeyVal.ishav = function (key) {
return this.hasOwnProperty(arguments[0]);
};
_KeyVal.Vals = function () {
var valarr = new Array();
for (var v in this) {
if (typeof (this[v]) != "function") {
valarr.push(v);
}
}
return valarr;
};
_KeyVal.Keys = function () {
var keyarr = new Array();
for (var k in this) {
if (typeof (this[k]) != "function") {
keyarr.push(this[k]);
}
}
return keyarr;
};
return _KeyVal;
}

var KeyVal = getKeyVal();       //获取键值对对象
KeyVal.set("l1", "11");         //添加键值对 参数1:键名,参数2:键值
KeyVal.set("l2", "22");         //添加键值对 参数1:键名,参数2:键值

KeyVal.set("l1", "33");         //添加键值对 参数1:键名,参数2:键值
var a1 = KeyVal.ishav("l1");    //查看键名是否存在 有返回true
var a2 = KeyVal.get("l1");      //获取给定键的值

KeyVal.remove("l1");            //删除给定键名的键
var a3 = KeyVal.ishav("l1");    //查看键名是否存在 没有返回false
var a4 = KeyVal.get("l1");      //获取给定键的值 键不存在返undefined

//KeyVal.clear();               //清除所有属性 方法也会清除不好用
KeyVal.set("l3", "66");         //添加键值对 参数1:键名,参数2:键值
var arr1 = KeyVal.Vals();//返回值得数组
var arr2 = KeyVal.Keys();//返回键名的数组

var abc = "abc";
</script>