Object produces wrong output from Function.

Question

I am frankly quite lost here as I have problems applying what I saw in the instruction video to a code challenge. The video talks about call and apply - but apparently I don't really understand where to use either of them here.

The task: "'The 'greeting' variable should be 'Hello Michael, my name is Andrew and I am in a awesome mood!'."

My code looks like this:

  var genericGreet = function(name, mood) {
    name = name || "you";
    mood = mood || "good";
    return "Hello " + name + ", my name is " + this.name +
      " and I am in a " + mood + " mood!";
  }

  var andrew = {
    name: "Andrew"
  }

  var args1 = ["Michael", "awesome", ":)"];

  var greeting = genericGreet({name: "Andrew"}, args1);

The last line includes the problem. Even after trying various things I cannot get the right output (and the error messages don't rely help to figure out the problem).

Thanks for any help! :)

Answer 1 · 2014-08-20T18:56:55Z

August 20, 2014 6:56pm

Hey Max,

Couple issues. Well, one issue, really. You forgot to call the apply method.

Your answer:

var greeting = genericGreet({name: "Andrew"}, args1);

Should be:

var greeting = genericGreet.apply({name: "Andrew"}, args1);

Also, I think they're asking you to pass in the predefined andrew object, as opposed to creating an object within the apply method, but either way will result in the correct answer.

Here it is with the predefined andrew object in place:

var greeting = genericGreet.apply(andrew, args1);

Answer 2 · 2014-08-21T10:54:25Z

August 21, 2014 10:54am

Thank you, Nathan! Your code solved the problem and my misunderstanding.

Welcome to the Treehouse Community

Looking to learn something new?

max1234

max1234

Object produces wrong output from Function.

2 Answers

Nathan Noom

Nathan Noom

max1234

max1234

Nathan Noom

Nathan Noom