Javascript 返回全局数组元素

我试图简单地打印出一个从csv文件导入的学生的全局数组列表。我已经做了足够多的故障排除，知道数据正在导入并读取良好。常见的答案似乎是不需要全局数组的“var”声明，但这对我也不起作用

这是我的声明：

//Student array list from csv import
 studentList = []; 
//window.studentList = [];

这是我初始化阵列的地方：

function processData(csv){
let allLines = csv.split(/\r\n|\n/); 

for(let i = 0; i < allLines.length; i++)
{
    let row = allLines[i].split(",");
    let col = []; 

    for(let j = 0; j < row.length; j++)
    {
       col.push(row[j]);  
    }
    if(col == " ") break;
    studentList.push(col);
}

//when I alert the array element by element the data is being read from within this function 
for(let i =0; i < studentList.length; i++)
{
    alert(studentList[i]);
}
}

---

问题似乎是您试图从函数

getStudent[i]

获取索引。尝试将该行更改为

alert（getStudent（i））带括号

编辑
我用这段代码进行了测试，它对我来说很好

studentList = [];

studentList.push('student1');

function getStudent(index) {
    return studentList[index];
}

function getStudentsDeparture(i) {
    var student = getStudent(i);
    alert(student);
}

getStudentsDeparture(0);

您是对的，但是当我仍然从一个单独的函数尝试时，我仍然没有定义。@Stefan您确定索引在
studentList
array的范围内吗？
function getStudentsDeparture(i)  
{
    trip.departure = getStudent(i);
    alert(trip.departure);          //prints undefined

    trip.destination = "123 Smith Rd, Maddingley VIC 3340"; 
    console.log('dest is: ' + trip.destination + ' dept is: ' + 
    trip.departure);
 }

studentList = [];

studentList.push('student1');

function getStudent(index) {
    return studentList[index];
}

function getStudentsDeparture(i) {
    var student = getStudent(i);
    alert(student);
}

getStudentsDeparture(0);