Untitled

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>Zadanie2</title>
        <meta name="description" content="Zadania">
    </head>
    <body>
        <script>

            function tnij(){
                body = document.querySelector("body");
                wartosc = prompt("Podaj dowolny ciąg znaków.");
                tablica = wartosc.split("")

                wenp = document.createElement("input");
                body.appendChild(wenp);
                button1 = document.createElement("button");
                body.appendChild(button1);
                button1.innerHTML = "Wstaw element na początek tablicy";

                wenk = document.createElement("input");
                body.appendChild(wenk);
                button2 = document.createElement("button");
                body.appendChild(button2);
                button2.innerHTML = "Wstaw element na koniec tablicy";

                ppet = document.createElement("input");
                body.appendChild(ppet);
                button3 = document.createElement("button");
                body.appendChild(button3);
                button3.innerHTML = "Pobranie pierwszego elementu tablicy";

                poet = document.createElement("input");
                body.appendChild(poet);
                button4 = document.createElement("button");
                body.appendChild(button4);
                button4.innerHTML = "Pobranie ostatniego elementu tablicy";

                sort = document.createElement("input");
                body.appendChild(sort);
                button5 = document.createElement("button");
                body.appendChild(button5);
                button5.innerHTML = "Sortuj";

                osort = document.createElement("input");
                body.appendChild(osort);
                button6 = document.createElement("button");
                body.appendChild(button6);
                button6.innerHTML = "Odwrotne sortowanie";

                button1.addEventListener("click", function(){
                    a = wenp.value;
                    tablica.unshift(a);
                })

                button2.addEventListener("click", function(){
                    b = wenk.value;
                    tablica.push(b);
                })

                button3.addEventListener("click", function(){
                    return tablica[0];

                })

                button4.addEventListener("click", function(){
                    d = wenk.value;
                    tablica.push(b);
                })

                button5.addEventListener("click", function(){
                    tablica.sort();
                })

                button6.addEventListener("click", function(){
                    tablica.reverse();
                })

            }

            tnij();
        /*
        wstawianie elmentu na początek
        wstawianie elmentu na koniec
        pobranie pierwszego elementu tablicy
        pobranie ostatniego elementu tablicy
        sortowanie
        odwrotne sortowanie
        */
        </script>
    </body>
</html>