当我的函数似乎返回正确答案时，为什么 console.log() 未定义日志记录？

Question

我正在尝试使用 JavaScript 制作一个基本的分数跟踪器：function Player(name) {    this.name = name;    this.scores = [];}function addPlayer(name) {    playersList.push(new Player(name));    return playersList;}function addScore(name, score) {    playersList.forEach(player => {        if (player.name == name) {            player.scores.push(score);        };    });}function getTotal(name) {    playersList.forEach(player => {        if (player.name == name) {            let sum = 0;            player.scores.forEach(score => sum += score);            console.log(sum);        }     });}var playersList = [];addPlayer("Player1");addScore("Player1", 3);addScore("Player1", 4);console.log(getTotal("Player1"));我期待的输出是：77但相反，我得到：7undefined谁能帮我解释为什么我console.log()没有记录从函数返回的数字？

Answer 1

试试这个

function getTotal(name) {

  let sum = 0;

  playersList.forEach(player => {

    if (player.name == name) {        

        player.scores.forEach(score => sum += score);

        console.log(sum);

    } 

  });

  return sum

}