index.js

const options = ["Stein", "Papier", "Schere"];
let playerScore = 0;
let computerScore = 0;


const playerScoreElement = document.getElementById("player-score")

function getRandomComputerResult(){
    const number = Math.floor(Math.random()*options.length);
    return options[number];
}

function hasPlayerWonTheRound(player, computer){
    if (player === "Stein" && computer === "Schere" || player === "Schere" && computer === "Papier" || player === "Papier" && computer === "Stein"){
        return true;
    } else {
        return false;
    }
}

function getRoundResults(playerChoice){
    const playerWon = hasPlayerWonTheRound(playerChoice, computerChoice);

    if(playerWon){
        playerScore++; //playerScore += 1; playerScore = playerScore + 1;
        return `Spieler hat gewonnen! ${playerChoice} schlaegt ${computerChoice}`;
    } else if (playerChoice === computerChoice){
        return `Unentschieden: beide haben ${playerChoice} gewaehlt.`;
    } else {
        computerScore++;
        return `Computer hat gewonnen! ${computerChoice} schlaegt ${playerChoice}`;
    }
}

console.log(playerScoreElement)