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Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <!-- Zadanie nr 1 -->
  <input id="firstPlayer" name="firstPlayer" type="text" />
  <input id="secondPlayer" name="secondPlayer" type="text" />
  <button id="submit">ok</button>
<!-- Zadanie nr 1 END -->
              // Zadanie nr 1
function getValue() {
  var firstPlayer = document.getElementById('firstPlayer').value;
  var secondPlayer = document.getElementById('secondPlayer').value;

  function playGame(val1, val2) {
    if (val1 === val2) {
      return 0;
    } else if (val1 == 'kamień' && val2 == 'nożyce') {
      return 1;
    } else if (val1 == 'kamień' && val2 == 'papier') {
      return 2;
    } else if (val1 == 'papier' && val2 == 'nożyce') {
      return 2;
    } else if (val1 == 'nożyce' && val2 == 'kamień') {
      return 2;
    } else if (val1 == 'papier' && val2 == 'kamień') {
      return 1;
    } else if (val1 == 'nożyce' && val2 == 'papier') {
      return 1;

  var score = playGame(firstPlayer, secondPlayer);
  // var score = playGame('papier', 'nożyce');

  switch(score) {
    case 0:
    case 1:
      alert('wygrał pierwszy zawodnik');
    case 2:
      alert('wygrał drugi zawodnik');
      alert('sprawdź pisownię');

document.getElementById("submit").addEventListener("click", getValue); 

// Zadanie nr 2

function filterNum() {
    var args = new Array(arguments.length);

    for(var i = 0; i < args.length; ++i) {
        args[i] = arguments[i];
      if(typeof args[i] !== 'number'){
        alert("Funkcja może przyjmować tylko liczby")
         return max = '';
    var max = args.reduce(function(prev, current) {
     return (prev > current) ? prev : current
    return max;

console.log(filterNum(1,4,7, 20));

// Zadanie nr 3

function vowels(word){
   if(typeof word == 'number') {
      return 'Błąd: podano wartość numeryczną'
   } else {
      const match = word.match(/[aeiouy]/gi);  
      return match ? match.length : 0 ;

// Zadanie nr 3 END
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