Multidimensional and associative array correct syntax

Question

I'm trying to create an multidimensional and associative array. I'm tried a PHP-like syntax but it doesn't work. How to solve?

var var_s = ["books", "films"];
var_s["books"]["book1"] = "good";
var_s["books"]["book2"] = "bad";
var_s["films"]["films1"] = "bad";
var_s["films"]["films2"] = "bad";

• Script47: You could use an object?
• Quentin: developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/…

Answer 1

Use objects:

var var_s = {"books":{}, "films": {}};
var_s["books"]["book1"] = "good";
-> {books: {book1: "good"}, films: {}}

Answer 2

You want object literal syntax:

var_s = {
 books: {
 book1: "good",
 book2: "bad"
 },
 films: {
 film1: "good",
 film2: "bad"
 }
}

Retrieving a value:

var myBook = var_s.books.book1

Setting:

var_s.books.book3 = "terrible"

I recommend reading You Don't Know JS for a good crash course in JS basics. Chapter 2 of Book 1 specifically covers objects and initialization,

Answer 3

You could use objects,

var Book = {
 'bookOne': 'good',
 'bookTwo': 'bad' 
};
/** Output => good **/
console.log(Book.bookOne);

Note: If you need, you can put an array within the object.

Reading Material

Working with Objects