Google Apps Script Compare Active User to Array - google-apps-script

Question

Not sure why this isn't working. I have a simple script that grabs the active user and checks to see if they are in an array of allowed senders. If they are, then it runs another function sendEmail(). If they are not in the array, then it throws an error.
function send(){
var ValidEmailsArray = ['email1#gmail.com', 'email2#gmail.com', 'email3#gmail.com']; //can be any number of emails.
var ActiveUser = Session.getActiveUser().getEmail();
for (var i = 0; i < ValidEmailsArray.length; i++){
if (ActiveUser.indexOf(ValidEmailsArray[i]) == -1) {
throw new Error('Woah! You must send the email from the ' + ValidEmailsArray + ' account.');
}
else {
sendEmail();
return;
}
}
As it is now, it throws the error even if the ActiveUser is in the ValidEmailsArray.
Any help would be much appreciated. Thanks!

Answer 1

Issue:
ActiveUser is of type string.
if (ActiveUser.indexOf(ValidEmailsArray[i]) == -1) {throw new Error
says that if ActiveUser doesn't contain the first email address in ValidEmailsArray, throw a error.
Solution:
Use Array#includes instead of a loop.
Snippet:
function send(){
const validEmailsArray = ['email1#gmail.com', 'email2#gmail.com', 'email3#gmail.com']; //can be any number of emails.
const activeUser = Session.getActiveUser().getEmail();
if(validEmailsArray.includes(activeUser)) sendEmail()
else throw new Error("?!")
}