Question

I have an array. One of the values in that array responses[1] is an integer. This integer can be from 1 to whatever number you want. I need to get the last number in the integer and determine based on that number if I should end the number with ‘st’, ‘nd’, ‘rd’, or ‘th’. How do I do that? I tried:

var placeEnding;
var placeInt = response[1]; //101
var stringInt = placeInt.toString();
var lastInt = stringInt.charAt(stringInt.length-1);
if (lastInt == '1'){
    placeEnding = 'st';
} else if (lastInt == '2'){
    placeEnding = 'nd';
} else if (lastInt == '3'){
    placeEnding = 'rd';
} else {
    placeEnding = 'th';
}

but that did not work. Every time I tried printing placeEnding it was always ‘th’ no matter if it should have been ‘st’, ‘rd’, or ‘nd’. When I tried printing placeInt, stringInt, or lastInt they all printed as " instead of the number. Why is this so? When I print responses[1] later on in the script I have no problem getting the right answer.

Answer 1

If all you want is the last digit, just use the modulus operator:
123456 % 10 == 6
No need to bother with string conversions or anything.