hangman.js

function main(){

  var word = "watermelon";
	var guess_array = ["_", "_", "_", "_", "_", "_", "_", "_", "_", "_"]
	var guesses = 8;
	var answer_arr = (word.split(''));
	console.log(guess_array);

	function arraysAreEqual(ary1,ary2){
	  return (ary1.join('') == ary2.join(''));
	}
	
	function guess(letter){
		var index = answer_arr.indexOf(letter);
		if(answer_arr.indexOf(letter) > -1){
			guess_array.splice(index, 1, letter);
			guess_array.splice(answer_arr.lastIndexOf(letter), 1, letter);
			return console.log(guess_array);
		}else{
			console.log("Wrong! You have " + guesses + " guesses remaining.");
			guesses = guesses - 1;	
		}	
	}

	while(guesses > -1 && arraysAreEqual(guess_array, answer_arr) == false){
		var input = prompt("Please enter a letter");
		guess(input);
	}
}
main();