//Get values from the HTML, reverse the message and then display.
                            function getValue(){
                                let message = document.getElementById("message").value;
                                let revMessage = reverse(message);
                                displayMessage(message, revMessage);
                                
                            }
                            //Return the reversed string.
                            function reverse(message){
                                let revMessage = "";
                                //decrementing for loop
                                for (let i = message.length-1; i >= 0; i--){
                                    revMessage += message[i];
                                }
                                return revMessage;
                            }
                            //Input the message and reversed message.
                            //Compare the two and display the results.
                            function displayMessage(message, revMessage){
                                message = message.toLowerCase();
                                message = message.replace(/[^a-z0-9]/g, "");
                                revMessage = revMessage.toLowerCase();
                                revMessage = revMessage.replace(/[^a-z0-9]/g, "");
                                
                                results.innerHTML = '';
                                let h3 = document.createElement("h3");
                                if (message === revMessage){
                                    h3.classList.add("bg-success", "text-center");
                                    h3.innerHTML = ("Palindrome!");
                                } else {
                                    h3.classList.add("bg-danger", "text-center");
                                    h3.innerHTML = ("NOT a Palindrome!");
                                }
                                document.getElementById("results").appendChild(h3);
                            }