为什么我在谷歌脚本中拆分字符串后无法获得数组长度？

Question

在谷歌脚本中，在我拆分字符串后，我无法获得结果数组的长度。我想这不是一个数组？如果是这样，如何将其转换为具有长度值的数组？

function splitAndCount() {
str = "33,34,35"; //example string
var stringSplit = str.split(","); //split string
return stringSplit.length(); //
// TypeError: Cannot call property length in object 33,34,35. It is not a function, it is "number". 
}

Answer 1

这不是函数，而是属性

function splitAndCount() {
str = "33,34,35"; //example string
var stringSplit = str.split(","); //split string
return stringSplit.length
}
console.log(splitAndCount())

Answer 2

从stringSplit.length中删除括号，它不是函数

function splitAndCount() {
str = "33,34,35"; //example string
var stringSplit = str.split(","); //split string
return **stringSplit.length**; 
}