转载：JS实现ArrayList类

转载网址：http://www.mctower.com/bz/Style.aspx?InfoID=276

// ArrayList. 

function ArrayList()
{
    this.index = -1;
    this.array = new Array();
}

ArrayList.prototype.clear = function()  //清空
{
    this.index = -1;
    this.array = new Array();
}

ArrayList.prototype.add = function(obj)  //添加
{
    if (this.getIndex(obj) == -1)
    {
        this.index = this.index + 1;
        this.array[eval(this.index)] = obj;
    }
}

ArrayList.prototype.get = function(index)  //根据索引取值
{
    return this.array[eval(index)];
}

ArrayList.prototype.size = function()  //获取ArrayList长度
{
    return this.index + 1;
}

ArrayList.prototype.getIndex = function(obj) //根据值取出在ArrayList中索引
{
    var index = -1;
    for (var i = 0; i < this.array.length; i++)
    {
        if (this.array[i] == obj)
        {
            index = i;
            break;
        }
    }
    return index;
}

ArrayList.prototype.remove = function(index)  //根据索引删除
{
    var j = 0;
    var arrThis = this.array;
    var arrTemp = new Array();
    for (w = 0; w < arrThis.length; w++)
    {
        if (eval(index) != eval(w))
        {
            arrTemp[j] = arrThis[w];
            j++;
        }
    }
    this.array = arrTemp;
    this.index = eval(j - 1);
}

ArrayList.prototype.removeValue = function(obj)  //根据值删除
{
var j = 0;
var arrThis = this.array;
var arrTemp = new Array();
for (w = 0; w < arrThis.length; w++)
{
if (obj != arrThis[w])
{
arrTemp[j] = arrThis[w];
j++;
}
}
this.array = arrTemp;
this.index = eval(j - 1);
}

ArrayList.prototype.toString = function()  //转换为字符串，中间用','分开
{
var strResult = "";
for (var i = 0; i < this.array.length; i++)
{
if (strResult == "")
strResult = this.array[i];
else
strResult = strResult + "," + this.array[i];
}
return strResult;
}