js dictionary

转载的

1.dictionary例子   

<script type="text/javascript" language="javascript">
        var dict = new Array();
        dict["人"] = "ren";
        dict["口"] = "kou";//键值对
        dict["手"] = "shou";
        alert(dict["口"]); //输出是kou
        for (var i in dict) {
            alert(i);//遍历dict，输出的是键---人
            alert(dict[i]);//遍历dict，输出的是值---ren
        }
    </script>

等同于上面的赋值： 

var dict = { "人": "ren", "口": "kou", "手": "shou" };

3.push，像数组最后继续添加元素 
var dict = new Array(1,4,5,6,7); 
dict.push(22,33,22,221); 

4,删除元素--只删除元素，但是数组长度 不变，删掉的元素变成undefined 
var d = new Array(44, 22, 33, 22, 11, 33); 
delete d[0];