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JavaScript Object-Oriented JavaScript (2015) Introduction to Methods Understanding this

Posted by Zach Freitag
Zach Freitag
20,341 Points

Modify this object so it uses two properties firstName and lastName and remove their variable declarations

I'm confused by this question,

The videos gave a simple example of:

var dice = { // Very simple object sides: 6, roll: function () { var randomNumber = Math.floor(Math.random() * this.sides) + 1; console.log(randomNumber); } }

How should I approach this challenge?

object.js 
var contact = {
  fullName: function() {
    var firstName = "Andrew";
    var lastName = "Chalkley";
    console.log(firstName + " " + lastName);
  }
}

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

To convert the function variables you could move them from inside the function and make them peers of "fullname" (like "sides" is to "roll" in the dice object).

The syntax for properties uses a colon instead of an equal sign to separate the names from the values, and the "var" keyword is not needed. Also, the complete property name/value pairs are separated by commas instead of semicolons.

Zach Freitag
Zach Freitag
20,341 Points

So..

  1. Re-position the function below firstName and lastName
  2. Change the = to : on firstName and lastName - Remove the var keyword on them both
  3. End firstName and lastName with "commas" not "semicolons
var contact ={
      firstName: "Andrew",
      lastName: "Chalkley",
    fullName: function() {
      console.log(firstName + " " + lastName);
   }
}
Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Looks good. :+1: That should get you past task 1.

Zach Freitag
Zach Freitag
20,341 Points

Thanks a lot Steven!

That's the first time I've ever moved a function around. Onwards and upwards at this point!