function fizzBuzz(val1, val2) {
                                let returnValue = "";

                                /*generate numbers from 1 to 100, evaluate against values taken in
                                * if divisible by val1, print 'FIZZ' - by val2, print 'BIZZ'
                                * if it's divisible by both, print 'FIZZBUZZ'*/
                                for (let i = 1; i <= 100; i++) {
                                returnValue += ((i % val1 == 0 ? 'FIZZ' : '') + (i % val2 == 0 ? 'BUZZ' : '') || i) + ' ';
                                }
                                return returnValue;
                                };

                                //display results
                                $("#buzzIt").on('click', function() {
                                let output = '';
                                let val1 = $("#numIn1").val();
                                let val2 = $("#numIn2").val();
                                output = fizzBuzz(val1, val2);
                                $('#results').empty().append(output);
                                });

                                //clear all
                                $("#clearIt").on('click', function () {
                                $("#numIn1").val("");
                                $("#numIn2").val("");
                                $("#results").text("");
                                })

                                //force numbers only input
                                $(".numOnly").keydown(function (event) {
                                let valid = false;
                                // Allow backspace, tab, and delete
                                if (event.keyCode == 46 || event.keyCode == 8 || event.keyCode == 9) {
                                // let it happen
                                valid = true;
                                } else {
                                // Ensure that it is a number and stop the keypress
                                if (event.keyCode >= 96 && event.keyCode <= 105) {
                                valid = true;
                                }}
                                });