Question:

Passing a function in another function and make a score counter in JS

Problem

I am working on a coding task to coding a Rock, Paper, Scissors game. I have written some functions already to handle computer choice and user choice, and I'm also supposed to write a function to call the other functions and also keep track of the scores.

I am stuck without a way of bringing everything together. This is my code below.

let input;

let random;

function getComputerChoice(min = 1, max = 3){

min = Math.ceil(min);

max = Math.floor(max);

random = Math.floor(Math.random() * (max - min + 1) + min);

if (random === 1){

console.log("computer picked Rock");

return random;

}

else if (random === 2){

console.log("computer picked Paper");

return random;

}

else

random === 3;

console.log("computer picked Scissors");

return random;

}

function playerSelection(){

input = prompt("Input Rock, Paper or Scissors").toLowerCase();

console.log("you picked", input);

return input;

}

function playRound(yourSelection, computerSelection) {

// your code here!

if (yourSelection === "rock" && computerSelection === 3){

console.log("you win")

}

else if (yourSelection === "scissors" && computerSelection === 2){

console.log("you win")

}

else if (yourSelection === "paper" && computerSelection === 1){

console.log("you win")

}

else

console.log("You lose, try again")

}

const yourSelection = playerSelection();

const computerSelection = getComputerChoice();

playRound(yourSelection, computerSelection);

function game(){

var theGame = game()

}

Solution

In your game function you'd need a loop to run a round and save the scores. If you want to end the game enter "exit".

function getComputerChoice(min = 1, max = 3) {

min = Math.ceil(min);

max = Math.floor(max);

let random = Math.floor(Math.random() * (max - min + 1) + min);

if (random === 1) {

console.log("computer picked Rock");

return random;

} else if (random === 2) {

console.log("computer picked Paper");

return random;

} else

random === 3;

console.log("computer picked Scissors");

return random;

}

function playerSelection() {

let input = prompt("Input Rock, Paper or Scissors or exit to end the game").toLowerCase();

console.log("you picked", input);

return input;

}

function playRound(yourSelection, computerSelection) {

if (yourSelection === "rock" && computerSelection === 3) {

console.log("you win")

return true;

} else if (yourSelection === "scissors" && computerSelection === 2) {

console.log("you win")

return true;

} else if (yourSelection === "paper" && computerSelection === 1) {

console.log("you win")

return true;

} else

console.log("You lose, try again")

return false;

}

function game() {

let yourScore = 0,

computerScore = 0;

while (true) {

const yourSelection = playerSelection();

if (yourSelection === 'exit') break;

const computerSelection = getComputerChoice();

const youWon = playRound(yourSelection, computerSelection);

if (youWon) {

yourScore += 1;

} else {

computerScore += 1;

}

alert(`${youWon ? 'You won!' : 'Computer won!'} your score=${yourScore}, computerScore=${computerScore}`)

}

game();

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Nisha Patel

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