Accessing Matrix Array Value in Json_encoded Array - php

Question

I have a php array that I assigned to a javascript variable with json_encode. The php array is numerical not associative.
Example: simpleArray[5][7]=1.50. I need to be able to access the 1.50 after the array has been json_encoded based on the index values.
PHP:
$simpleArray= [];
foreach($childProducts as $child) { //cycle through simple products to find applicable
$simpleArray[$child->getVendor()][$child->getColor()] = $child->getPrice();
var_dump ($simpleArray);
}
Javascript:
var simpleArray = <?=json_encode($simpleArray)?>;
//..lots of unrelated code
for(var i=0; i < IDs.length; i++)
{
console.log(simpleArray);//see the picture of me below
var colorSelected = $j("#attribute92 option:selected").val(); //integer value
$j('.details'+data[i].vendor_id).append('<li class="priceBlock">$'+simpleArray[i][colorSelected]+'</li>');
}
Console.log(simpleArray):

Answer 1

Here you are likely trying to access values that don't exist in your object:
simpleArray[i][colorSelected]
Based on your for loop definition, you can have i values of 0, 1, 2 which don't exist in the object shown (which has properties at keys: 3,4,5). Also your for loop has no relation at all to the number of items in your object, which I am not sure is intended.
Also, colorSelected derives it's value from a call to val() which returns a string you you probably want to change the line where it is defined to:
var colorSelected = parseInt($j("#attribute92 option:selected").val());
This will make it an integer value.