when two last item remains load the other data jquery code example

Example 1: javascript get second last element in array

const myNumbers = [100, 200, 300, 400, 500];
// option one
const seconLastNumber = myNumbers.slice(-2, -1)[0]) // 400

// option two
const seconLastNumber = myNumbers[numbers.length - 2]; // 400

Example 2: remove second last element from array javascript

var pg_url = array_fragment[array_fragment.length - 2]