FAQ: Objects - Methods


#1

This community-built FAQ covers the “Methods” exercise from the lesson “Objects”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Web Development

Introduction To JavaScript

FAQs on the exercise Methods

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#2

Below the retreatMessage variable in the code editor, create an alienShip object. It should contain a method .retreat() which will console.log() the retreatMessage .

let retreatMessage = ‘We no longer wish to conquer your planet. It is full of dogs, which we do not care for.’;

// Write your code below

Help


#3

The lesson gives a good example…

With the new method syntax introduced in ES6 we can omit the colon and the function keyword.

const alienShip = {
  invade () { 
    console.log(...)
  }
};

The ellipsis indicates where your content will be written in your method.


#4


=> i get this undefined why <=


#5

It’s a response from the console to the last instruction. console.log() has no return, and as the final instruction, it is that response that gets logged (undefined). Ignore it.


#8

I wouldn’t say ignore it.
You’re incorrectly console logging a call to the functions. What you need to do is just call the functions–those functions each execute their own console log message.

alienShip.retreat();
alienShip.takeOff();

#9

It says We can include methods in our object literals by creating ordinary, comma-separated key-value pairs.
shouldn’t it be colon-separated key-value pairs?


#10

We’re to understand that key-value pairs are separated by commas, and may be numerous. key and value are separated by a colon since they are bound to each other to form a property. Properties are essentially named objects that are attributes of an object.

When we write,

let a = 42;

we’ve declared an a attribute on the window object with a value of 42.

console.log(window.a)    // <- 42

#11

Thanks a lot… I understand this now.
Key-value pairs are separated by commas the same way methods being included to object literals are separated because the method name is seen as the key while the function is the value.
Thanks again


#12
function f() {
    return 'foo'
}
 > window.f()
<- foo

#13

I have a serious question. Why does it say “We no longer wish to conquer your planet. It is full of DOGS which we do not CARE FOR!?”
WHO TF AINT CARIN FOR DOGS!?


#14

Perhaps the aliens are either Felidae, Leporidae or Sciuridae to whom the Canidae is a natural antagonist.


#15

what if they just wiped the dogs off the planet rip dogs xd idc


#16

All the more reason we should hope that aliens who arrive here don’t see Hominidae as their antagonist.