1    //hangman
2    let numGuesses = 10;
3    let word = prompt("Type in a word or leave blank for a random word.");
4    if (!word)
5    {
6      let words = ["JavaScript", "science", "pony", "Earth"];
7      let index = Math.floor(Math.random() * words.length);
8      word = words[index];
9    }
10   
11   word = word.toUpperCase();
12   let playerWord = [];
13   
14   for (let i = 0; i < word.length; i++)
15   {
16     playerWord.push("-");
17   }
18   
19   while (playerWord.indexOf("-") >= 0 && numGuesses > 0)
20   {
21     let message = playerWord.join(" ");
22     message += " Guess a letter.";
23   
24     let guess = prompt(message);
25     guess = guess[0].toUpperCase();
26   
27     let wrongGuess = true;
28     for (let j = 0; j < word.length; j++)
29     {
30       if (word[j] === guess)
31       {
32         playerWord[j] = guess;
33         wrongGuess = false;
34       }
35     }
36     if (wrongGuess)
37     {
38       alert(guess + " is not in the word.");
39       numGuesses--;
40     }
41   }
42   
43   alert("The word was " + word + ".");
44   if (numGuesses > 0)
45   {
46     alert("You won!");
47   }
48   else
49   {
50     alert("Better luck next time.");
51   }
52