I’m trying to understand why the console returns ‘undefined’ at the end, after the code seems to work properly:
const getUserChoice = userInput => {
userInput = userInput.toLowerCase();
if (userInput === 'rock' || userInput === 'paper' || userInput === 'scissors') {
return userInput;
} else {
console.log('Invalid User Input');
}
};
function getComputerChoice() {
let computerChoice = Math.floor(Math.random() * 3);
switch (computerChoice) {
case 0:
return 'rock';
case 1:
return 'paper';
case 2:
return 'scissors';
default:
return 'error';
}
};
function determinWinner(userChoice, computerChoice) {
if (userChoice === computerChoice) {
return 'Tie!';
} else if (userChoice === 'rock') {
if (computerChoice === 'paper') {
return 'Computer wins!'
} else {
return 'You win!'
}
} else if (userChoice === 'paper') {
if (computerChoice === 'scissors') {
return 'Computer wins!'
} else {
return 'You win!'
}
} else if (userChoice === 'scissors') {
if (computerChoice === 'rock') {
return 'Computer wins!'
} else {
return 'You win!'
}
} else {
return 'Error!';
}
};
function playGame() {
let userChoice = getUserChoice('rock');
let computerChoice = getComputerChoice();
console.log(`You picked ${userChoice}!`);
console.log(`Computer picked ${computerChoice}`);
console.log(determinWinner(userChoice, computerChoice));
}
console.log(playGame());
/*
returns :
“You picked rock!
Computer picked paper
Computer wins!
undefined”
*/
