//笛卡儿积组合

function descartes(list)

{

    //parent上一级索引;count指针计数

    var point  = {};

    var result = [];

    var pIndex = null;

    var tempCount = 0;

    var temp   = [];

    //根据参数列生成指针对象

    for(var index in list)

    {

        if(typeof list[index] == 'object')

        {

            point[index] = {'parent':pIndex,'count':0}

            pIndex = index;

        }

    }

    //单维度数据结构直接返回

    if(pIndex == null)

    {

        return list;

    }

    //动态生成笛卡尔积

    while(true)

    {

        for(var index in list)

        {

            tempCount = point[index]['count'];

            temp.push(list[index][tempCount]);

        }

        //压入结果数组

        result.push(temp);

        temp = [];

        //检查指针最大值问题

        while(true)

        {

            if(point[index]['count']+1 >= list[index].length)

            {

                point[index]['count'] = 0;

                pIndex = point[index]['parent'];

                if(pIndex == null)

                {

                    return result;

                }

                //赋值parent进行再次检查

                index = pIndex;

            }

            else

            {

                point[index]['count']++;

                break;

            }

        }

    }

}

//该代码片段来自于: http://www.sharejs.com/codes/javascript/7013

var aa=[1,2,3],bb=[1,2,3],cc=[1,2,3],dd=[1,2,3];

var zz=[aa,bb,cc,dd];//此处数组个数任意

var selectSpec = [ ['16G','64G','128G'] , ['土豪金','银色','黑色','pink'],['联通3G存费送餐','联通4G存费送餐','联通2G存费送餐'], ['76元套餐','106元套餐','206元套餐']];

var result=descartes(selectSpec);

console.log(result);

document.write(result);