I'm having problems getting my simple Rock Paper Scissors game to display the winner of each game when the user chooses anything either than Rock. How do I use multiple if...else statements so that my declareWinner function works when the user chooses Scissors or Paper?
let choices = ["rock", "paper", "scissors"];
// GETTING USER INPUT
const userInput = prompt("Do you choose rock, paper or scissors?").toLocaleLowerCase();
if(userInput ==="paper" || userInput ==="rock" || userInput ==="scissors"){
console.log("You chose " + `${userInput}`);
} else {
console.log("Error! Try again!");
}
// GETTING COMPUTER INPUT
const computerInput = choices[Math.floor(Math.random() * 3)];
console.log("Computer chose" + ` ${computerInput}`);
if (computerInput <= 0.33) {
computerInput = "rock";
}
if (computerInput >= 0.67) {
computerInput = "paper";
}
if (computerInput >= 0.66) {
computerInput = "scissors";
}
// DECLARE WINNER
// User Chooses Rock
function declareWinner(userInput, computerInput) {
if(userInput === "rock" && computerInput === 'paper') {
console.log ('You win! Rock beats paper!');
} else if (userInput === 'rock' && computerInput === 'rock') {
console.log ('Its a tie!');
} else if (userInput === 'rock' && computerInput === 'scissors') {
console.log ('You win! Rock beats scissors!');
// User Chooses Paper
} else if(userInput === "paper" && computerInput === 'rock') {
console.log ('You win! Rock beats paper!');
} else if (userInput === 'paper' && computerInput === 'paper') {
console.log ('Its a tie!');
} else if (userInput === 'paper' && computerInput === 'scissors') {
console.log ('You lose! Scissors beats paper!');
// User Chooses Scissors
} else if(userInput === "scissors" && computerInput === 'rock') {
console.log ('You lose! Rock beats scissors!');
} else if (userInput === 'scissors' && computerInput === 'paper') {
console.log ('You win! Scissors beats paper!');
} else {
console.log ('It is a tie!');
}
}
declareWinner();
There were two problems with the code:-
choices[Math.floor(Math.random() * 3)]; which results in a random value from choices array, so there is no need for multiple if-else statements that were after it.declareWinner function declaration.Also, You are missing some conditions in declareWinner function, like userInput === 'paper' && computerInput === 'rock', userInput === 'rock' && computerInput === 'scissors' etc.
const choices = ["rock", "paper", "scissors"];
// GETTING USER INPUT
const userInput = prompt("Do you choose rock, paper or scissors?");
if (userInput === "paper" || userInput === "rock" || userInput === "scissors") {
console.log("You chose " + `${userInput}`);
} else {
console.log("Error! Try again!");
}
// GETTING COMPUTER INPUT
let computerInput = choices[Math.floor(Math.random()*3)];
console.log("Computer chose" + ` ${computerInput}`);
// DECLARE WINNER
const winner = declareWinner(userInput, computerInput);
function declareWinner(userInput, computerInput) {
if (userInput === 'rock' && computerInput === 'paper') {
console.log('You lose! Rock beats Paper');
} else if (userInput === 'scissors' && computerInput === 'paper') {
console.log('You win! Scissors beats Paper');
} else {
console.log('You tie!');
}
}Tip:- You can use an object to choose the winner in declareWinner function.
const choices = ["rock", "paper", "scissors"];
// GETTING USER INPUT
const userInput = prompt("Do you choose rock, paper or scissors?");
if (userInput === "paper" || userInput === "rock" || userInput === "scissors") {
console.log("You chose " + `${userInput}`);
} else {
console.log("Error! Try again!");
}
// GETTING COMPUTER INPUT
let computerInput = choices[Math.floor(Math.random() * 3)];
console.log("Computer chose" + ` ${computerInput}`);
// DECLARE WINNER
const winner = declareWinner(userInput, computerInput);
function declareWinner(userInput, computerInput) {
let win = {
rock: "scissors",
paper: "rock",
scissors: "paper"
};
if (win[userInput] === computerInput) {
console.log(`You won! ${userInput} beats ${computerInput}`);
} else if (win[computerInput] === userInput) {
console.log(`You lost! ${computerInput} beats ${userInput}`);
} else console.log("Tie")
}You can't change a const value. Use let instead:
let computerInput = choices[Math.floor(Math.random() * 3)];