javascript - 如何从js函数返回多个对象

Question

我有一个如下所示的功能。当我创建一个新的函数对象时，如下所示:

var newArray = new ArrayCollection ();

在 newArray 中，我想像这样访问函数属性和类:

var first= newArray[0]

而不是:

var first = newArray.Collections[0]

还有:

newArray.add("a");

如何修改函数来执行此操作？

ArrayCollection = function ()
{
    this.Collections = new Array();

    this.add = function ( value )
    {
     ....
    };
    this.remove = function ( value )
    {
       .... 
    };
    this.insert = function ( indx, value )
    {
      ....
    };
    this.clear = function ()
    {   ...

    }

}

Answer 1

你可以这样实现

ArrayCollection = function () {
    this.Collections = new Array();
    this.length = 0;

    this.add = function (value) {
        this[this.length] = value;
        this.length++;
    };

    this.remove = function (value) {
        // remove from array
        this.length--;
    };

    this.insert = function (indx, value) {
        // insert to array
        this.length++;
    };

    this.clear = function () {
        // clear array
        this.length = 0;
    };
};

var newArray = new ArrayCollection();
newArray.add('ll');
newArray.add('bb');
newArray.add('cc');

alert(newArray[0])
alert(newArray[1])
alert(newArray[2])