js中如何创建list和map对象

                

                        var name="aaa";                

                        var upassword="bbb";

    var list=new Array();//创建list集合
    list[0]="name";//给集合赋值
    list[1]="upassword";
    var map={};//创建map集合
    map['name']=name;
    map['upassword']=upassword;