我正在為“奧丁項目”創建一個石頭剪刀布游戲。指令說明通過使用外部函數在一輪函數中實現計算機選擇隨機化來創建一輪游戲。為了練習，我試圖將一個函數分配給變量名“computerChoice”。當我這樣做時，它的結果是未定義的。如果我只是使用函數調用“computerPlay()”將我的參數放入 playRound()，它就可以工作。如果我為函數“computerChoice”使用分配的變量，它就不起作用。我在網上搜索了這個，據說你可以在 Javascript 中做到這一點。我在這里做錯了什么？let choices = ['rock', 'paper', 'scissors'];const rdm = Math.floor(Math.random() * 3);const computer = choices[rdm];// let playerSelection = playerSelection.toLowerCase();function playRound(playerSelection, computerSelection) {    if (playerSelection === computerSelection) {        return 'It is a tie!!!';    } else if (playerSelection === 'rock' && computerSelection === 'paper') {        return 'PAPER BEATS ROCK! computer wins!'    } else if (playerSelection === 'rock' && computerSelection === 'scissors') {        return 'ROCK BEATS SCISSORS! player wins!';    } else if (playerSelection === 'paper' && computerSelection === 'scissors') {        return 'SCISSORS BEATS PAPER! computer wins!'    } else if (playerSelection === 'paper' && computerSelection === 'rock') {        return 'PAPER BEATS ROCK! player wins!';    } else if (playerSelection === 'scissors' && computerSelection === 'rock') {        return 'ROCK BEATS SCISSORS! computer wins!'    } else if (playerSelection === 'scissors' && computerSelection === 'paper') {        return 'SCISSORS BEATS PAPER! player wins!';    }}// function computerPlay() {//     const computer = choices[rdm];//     return computer;// }// console.log(playRound('rock', computerPlay())); // This works!let computerChoice = function computerPlay() {    const computer = choices[rdm];    return computer;}console.log(playRound('rock', computerChoice)); // This does not Work!