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Vaughn Council
2,419 PointsAccessing values
Jim mentions that you can write an array within an array. Example:
var cars = ["Honda", "Toyota", "Ford", ["BMW", "Benz"] ];
In this case what index would I use to access BMW? Would it be cars[3]; ?
1 Answer
Ken Alger
Treehouse TeacherVaughn;
Welcome to Treehouse!
Let's do a quick look at accessing arrays in general as a refresher. Here is your array:
var cars = ["Honda", "Toyota", "Ford", ["BMW", "Benz"] ];
As you know, if you want to access an array item you use it's index number. JavaScript utilizes a zero based index, so in this example Honda resides at index 0, Toyota at index 1, etc.
When you get to the nested array, ["BMW", "Benz"], that is accessed by cars[3]. In order to access BMW by itself you would use cars[3][0], which accesses the inner array with the [3] and then the first item in that array with the [0].
Does that make sense? For more information on JavaScript arrays I would point you to the Mozilla Developer's Network on them. There are, of course, lots of additional resources, but this is a great starting place.
Happy coding,
Ken
Nejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 PointsNejc Vukovic
Full Stack JavaScript Techdegree Graduate 51,574 Points@Ken No other way to explain it :) It is what it is:)