Validate a comma separated email list

Question

I\'m trying to come up with a regular expression to validate a comma separated email list.

I would like to validate the complete list in the first place, then split

Answer 1

An easier way would be to remove spaces and split the string first:

var emails = emailList.replace(/\s/g,'').split(",");

This will create an array. You can then iterate over the array and check if the element is not empty and a valid emailadres.

var valid = true;
var regex = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

for (var i = 0; i < emails.length; i++) {
     if( emails[i] == "" || ! regex.test(emails[i])){
         valid = false;
     }
}

note: I got the the regex from here