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

Also note that you'll want to get rid of extra spaces so an extra step needs to be added as follows:

var emailStr = "felipe@google.com   , felipe2@google.com, emanuel@google.com\n";


function validateEmailList(raw){
    var emails = raw.split(',')


    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].replace(/\s/g, ""))){
            valid = false;
        }
    }
    return valid;
}


console.log(validateEmailList(emailStr))

By adding .replace(/\s/g, "") you make sure all spaces including new lines and tabs are removed. the outcome of the sample is true as we are getting rid of all spaces.