pendu.js

var Pendu = function () {
  var that = this;
  var counter = document.getElementById('count');
  var input = document.getElementById('lol');
  var letters_holder = document.getElementById('letters');
  this.letters;
  var counter_start = 11;
  var words = ['peste', 'imitateur', 'empreinte', 'quadrupède', 'panier'];
  var guesses = [];
  this.word;
  var word_length;

  this.getRandomArbitrary = function(min, max) {
    return Math.floor(Math.random() * (max - min) + min);
  };

  var place_the_letter = function (letter) {
    var validated = false;
    for (var i = 0; i < word_length; i++) {
      if (that.word[i] === letter) {
        that.letters[i].innerHTML = letter;
        validated = true;
      }
    }

    return validated;
  };

  var check_the_input = function() {
    return input.value;
  };

  var validate_letter = function (text) {
    if (text.length === 1) {
      if (guesses.indexOf(text) === -1) {
        guesses.push(text);

        return true
      } else {

        return 'already dood';
      }
    }

    return false;
  };

  var is_finished = function () {
    for (var i = 0; i < that.letters.length; i++) {
      if (that.letters[i].innerHTML === '_') {

        return;
      }
    }
    alert('BRAVOOOOO !!!!');
    window.location = 'https://youtu.be/oTyNVLlFiys?t=10s';
  };

  var reset_value = function() {
    input.value = '';
  };

  var trigger = function(keydown) {
    if (keydown.keyCode === 13) {
      var letter = check_the_input();
      var is_good = validate_letter(letter)
      if (true === is_good) {
        if (place_the_letter(letter)) {
          is_finished();
        } else {
          alert('This letter is not in my word :/');
          display_chances();
        }
      } else if ('already dood' === is_good) {
        alert('You already picked this letter...');
      } else {
        alert('YOU MUST CHOOSE ONE LETTER BRUH !!!');
      }
      reset_value();
    }
  };

  var enable_input = function () {
    window.addEventListener('keydown', trigger)
  };

  var display_chances = function () {
    if (--counter_start > 0) {
      counter.innerHTML = counter_start;
    } else {
      window.location = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';
    }
  };

  var display_underscores = function() {
    for (var i = 0; i < word_length; i++) {
      var span = document.createElement('span');
      span.classList.add('blank');
      span.innerHTML = "_";
      letters_holder.appendChild(span);
    }
    that.letters = document.getElementsByClassName('blank');
  };

  var initialize_pendu = function () {
    that.word = words[that.getRandomArbitrary(0, words.length)];
    word_length = that.word.length;
    display_chances();
    enable_input();
    display_underscores();
  };

  return {
    init : function () {
      initialize_pendu();
    }
  }
};
window.pendu = new Pendu();