javascript - 输入5个数字后返回数组的最大值

Question

我通过输入 5 个不同的分数来创建一个数组。现在，我想从该特定数组中返回最高分。但是，在我输入最后一个分数后，我收到以下消息: “最高分:未定义”

有人可以指出为什么会发生这种情况并帮助我吗？我目前正在学习JS。

var arrScores = [];     //I created an empty array where my scores will be stored.                            

//Here I am creating a loop so that the user can input 5 scores
for (var i = 0; i < 5; i++) {             
  arrScores.push(prompt('Please enter your score ' + (i+1))); 
}
//I created a function thinking I would be able to pull the largest score. 
function highestScore(arr){
    highestScore = Math.max(arrScores)
}
//This is suppose to be the final alert with the highest score. 
alert('Highest score: ' + highestScore.join);     

Answer 1

最高分是一个函数。首先你需要调用它

alert('Highest score: ' + highestScore(arrScores));

并且要获得该值，您需要从highestScore 函数返回该值

function highestScore(arrScores){
    highestScore = Math.max(...arrScores)
    return highestScore
}

更短的方法

function highestScore(arrScores){
    return Math.max(...arrScores)
}