Listing Even Numbers in JavaScript

What are Even Numbers?

Hello pupils, what are even numbers? Even numbers are numbers that are divisible by 2.

They include:

2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ...

Well then, let's see how we can write a programming code to make our computer list a set of even numbers in JavaScript, between a given range of values.

Type out the adjoining JavaScript code for listing even numbers.
We will see what each significant part does as we go along.

Creating HTML Files

Create a new file; On Notepad++: File, New.
Call it EvenNumbers.html.

Remember to select the right folder (usingMaths) if necessary and change Type to All.

JavaScript code for EvenNumbers.html

<!DOCTYPE html>

<html lang="en">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>List Even Numbers</title>
    </head>
    <body>

        <h3>Here is a List of Even Numbers Between 2 and 100 Inclusive</h3>
        
        <div id="even_numbers"></div>

        <script>

            var start = 2; // This variable holds the first of our even numbers.
            var end = 100; // This variable holds the last number for our series.

            /* Loop through and collect all the even numbers. */
            while (start <= 100) {
                if ((start % 2) == 0) {
                    document.getElementById("even_numbers").innerHTML += start + ", "; // Mind the '+' before the '=' sign.
                }
                start = start + 1;
            }

        </script>

    </body>
</html>

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