Javascript中的索引数组名称

Question

I have set of arrays named "list0 ........ through to list7" explicitly defined. I want to make each of these arrays an element in an existing array (so I have a 2D array of these defined arrays)

how do I reference each 'list' array in a 'for' loop?

for example:

var matrix1 = new Array();

function makeMatrix1(){

    for(row=0; row<8; row++)
    {       

        matrix1[row] = list[row]//put each 'list' array into matrix1 as an element

    }

The above syntax does not work, obviously.

Answer 1

What about:

var matrix1 = [list0, list1, list2, list3, list4, list5, list6, list7];

It's not a for loop, but it seems simple enough (perhaps simpler than a for loop) and gets the job done. The alternative, I think, would be to use an eval (which I personally try avoid at almost any cost).

var matrix1 = [];
for (row = 0; row < 8; row++) {
    matrix1.push(eval("list" + row));
}

Answer 2

You can do something like this

   var myTwoDimArray = [listo,........,list7];  

now print by

   alert(myTwoDimArray[0][0]);  

Hope this helps.

Answer 3

list0, list1, list2 etc is already numbered as an array structure. How about

list=new Array();
list[0]=["a","b","c"];
list[1]=["d","e"];
list[2]=["f","g","h","j"];
etc

then you already have your matrix structure. So as you are already defining rows explicitly you could do

matrix=new Array();
matrix[0]=["a","b","c"];
matrix[1]=["d","e"];
matrix[2]=["f","g","h","j"];
etc

matrix[1][1] would give "e" matrix[2][3] would give "j" etc

Of course you could just do

matrix=[
   ["a","b","c"],
   ["d","e"],
   ["f","g","h","j"],
.....
.....
and so on for each of the 8 rows

]

for same result