push in multi-dimensional, associated mass

[simrah]

How does JavaScript realize the following?

The html components are tested in the cycle, and the first steps of the cycle should look:

(1) First element values check, first value equal num_1an element of the association is being created:

{
   num_1:{val_1: val_2}
}

(2) Test of the second element if the first value is equal num_1add a new element:

{
   num_1:{val_1: val_2,
          val_3: val_4}
}

And so on. In other words, we have to put a new association at the end of the association. It's the method of handling the mass. Simple push only works with the usual mass.

upd:

If it's easier to say, we need analog like this on PHP:

$array[num_1][] = [val_1 => val_2]
$array[num_1][] = [val_3 => val_4]

[Amritpal]

Apparently, you just want to add a new characteristic with an object value, it's being implemented as follows.

var obj = {
   num_1:{val_1: val_2}
};
obj['num_1']['val_3'] = val_4;

result

{

num_1:

{

val_1: val_2,

val_3: val_4

}

}