[Proyecto] Iteración numero impares y pares del 1 al 100

<meta charset="utf-8">

<br>
<center><h1><font color= red>CALCULA MEDIA DE LAS EDADES DE UNA FAMILIA</font></h1></center>

<script>

    // Start functions ------>

        //Show the message
    function print (message){

        size();
        document.write(message);
        jumpLine();
        makeLine();
    }

        //Make a space
    function jumpLine() {

        document.write("<br><br>");    
    }

        //Make a Line
    function makeLine() {

        document.write("<hr>");    
    }

    function size() {

        document.write("<font size=4>");
    }

    // End functions <--------

    //Variables

    print("Pares")
    var counter = 1;
    var counter2 = 1;

    while (counter <= 100){

        counter++;
        if (counter % 2 == 0) {

            print(counter);
        }
    }

    print("Impares")

    while (counter2 <= 100){

        counter2++;
        if ((counter2 % 2) !== 0) {

            print(counter2);
        }

    }

    print("fin");

    //End Variables

</script>