Javascript function returning undefined

Question

Its a bit strange. I am making a bitly api call and it returns undefined for all the calls, but if I add an alert() right before I get the link variable, it returns the correct link.

Now if I add the alert here :

function getBitlyLink(){
    alert(bitlyLink);
    return bitlyLink;
}

I get the correct links and not undefined. What exactly is that alert box doing??

the alert box induces a delay . You need to use a callback – amal Jun 09 '11 at 06:28 — amal, Jun 09 '11 at 06:28

score 3 · Answer 1 · answered Jun 09 '11 at 06:25

3

Your code is not being executed synchronously. Pass a callback to your getBitlyLink() function.

answered Jun 09 '11 at 06:25

alex

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which would be like function getBitlyLink(callback)?? and then callback(bitlyLink); ? How do I make the call to it then? – imgr8 Jun 09 '11 at 06:43

Javascript function returning undefined

1 Answers1