A simple way to see how this program was written.
function getNumbers(){
let startValue = 0;
let endValue = 100;
// Get numbers from the UI
startValue = document.getElementById("startValue").value;
endValue = document.getElementById("endValue").value;
// Turn potential decimal numbers to whole numbers
startValue = parseInt(startValue);
endValue = parseInt(endValue);
// Check if input are numbers
if (Number.isInteger(startValue)
&& Number.isInteger(endValue)) { {
// Get all the numbers from start to end value
let numbers = generateNumbers(startValue, endValue);
// Display the numbers on the page
displayNumbers(numbers)
} else {
}
}
function generateNumbers(startValue, endValue){
let numbers = [];
for (let i = startValue; i <= endValue; i++) {
numbers.push(i);
}
return numbers;
}
function displayNumbers(numbers){
// First value is found at index 0 in the array
let startValue = numbers[0];
// Length of the array
let endValue = numbers.length;
let tableBody = document.getElementById("results");
// Clear out previous rows
tableBody.innerHTML = "";
for (let index = 0; index < endValue; index++) {
let tableROw = "";
// Get the value of the index,
// because the index position does not equal
// the variable being held there.
let number = numbers[index];
if (number % 2 == 0) {
// The number is even
tableRow = `${number} ${number}