Store javascript function return in a variable

Question

I am trying to return a value from a javascript function that checks whether a string of multiple email addresses contains valid emails:

validateEmail function:

validateEmail = function(email) {
    var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
    return re.test(email);
} // this returns true/false

var emails = ["[email protected]", "[email protected]"]

var emailResult = function(emails) {
        var result;
        emails.forEach(function(email) {
            if(validateEmail(email.trim()) === false) {
                result = false;
            }
        });
        return result
    }

If any of the emails are valid, I want emailResult to be equal to false. However, when I run console.log(emailResult), I just get a print out of my function's code. Can someone help?

Thanks!!

console.log(emailResult(emails))? (You also want to start with var result = true;) — Amadan
– Amadan, Commented Sep 9, 2015 at 1:13
emailResult is the function itself, if you want the return value, you have to call the function. emailResult([]) will return the initial result definition — webdeb
– webdeb, Commented Sep 9, 2015 at 1:24

rodamn · Accepted Answer · 2015-09-09 01:15:28Z

2

You are sending the function itself to console.log(). You need to call the function, and pass the result of the function to console.log(), like so:

console.log(emailResult(emails));

answered Sep 9, 2015 at 1:15

rodamn

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mwilson · Accepted Answer · 2015-09-09 01:15:06Z

0

That's because you need to invoke the function. You could get it to work if you did console.log(validateEmail("test@"test.com")); instead or you can restructe like so:

function validateEmail (email) {
       var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
       return re.test(email);
} // this returns true/false

var emails = ["[email protected]", "[email protected]"]

var emailResult = function(emails) {
       var result;
       emails.forEach(function(email) {
              if(validateEmail(email.trim()) === false) {
                     result = false;
              }
       });
       return result
}

var theEmails = validateEmail("[email protected]");

answered Sep 9, 2015 at 1:15

mwilson

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