two-dimensional array - adding objects to fields

The expression test[0] refers to a new Array instance, created by the line:

test[i]=new Array(10);

However, there's nothing in that array. Thus, test[0][5] refers to an undefined object. You'll need to initialize that to an array before you can push() something on to it. For example:

test[0][5] = []; // Set [0][5] to new empty array
test[0][5].push(object); // Push object onto that array

Or even:

test[0][5] = [object]; // Set [0][5] to one item array with object

var test = new Array(5);
for (i=0; i<=5; i++)
{
  test[i]=new Array();
}

this will let you create a multi-dimensional array. Each element in the variable test will be an array.

From here you can do

test[0].push("push string");
test[0].push("push string2");

from here

test[0][1] will contain "push string2"

Change "<=" to "<".

for (i = 0; i < 5; i++)

Arrays are zero based so if you have an array with 5 slots and you want to access the last slot you would use:

anArray[4]

before use push ask to value is an array

if(test[0][5] instanceof  Array)
    test[0][5].push(object);

test[0][5] = new Array(); // you need initialize this position in Array
test[0][5].push(object); // and then push object

or

test[0][5] = [object]; // directly create a new Array with object

but if you just want to have an object in this position, you should do it:

test[0][5] = object;