How to return a value to an outer Javascript function

Question

I'm new to Javascript and learning some basics. Below is my code:

test({FirstName: "Codi",LastName: "Madison"}, function (reply) {alert(reply)});

function test(message) {

    return "Hello " + message.FirstName + ' ' + message.LastName

}

I want to keep the function(reply) but how do I return a value to it? I have tried return but the alertbox doesn't fire, what am I missing. Sorry if this is stupid but I'm still learning. Thank you.

jsfiddle.net/arunpjohny/umhxhda2/1 - change test to accept a second parameter - the callback function — Arun P Johny
– Arun P Johny, Commented Feb 10, 2016 at 11:28
@Bergi thats a bit of an odd comment. Why would you use something you don't need. The fact that this user asked this question kind of implies that they do need them. — Jamiec
– Jamiec, Commented Feb 10, 2016 at 11:31
@Jamiec: He said he's just learning basics, so I'm not sure (and people do lots of weird stuff when they don't entirely understand it). And in the example he's shown, he definitely does not need them. — Bergi
– Bergi, Commented Feb 10, 2016 at 11:33

Curtis · Accepted Answer · 2016-02-10 11:28:50Z

2

Your function would need to change to include the 2nd parameter and execute that function passing in the hello message:

function test(message, callback) {
    callback("Hello " + message.FirstName + ' ' + message.LastName);
}

answered Feb 10, 2016 at 11:28

Curtis

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