CODEWITHSUNDEEP
javascript
raz789
raz789

Reputation: 19

Creating an array of objects with their own properties in Javascript

var i;


    var Book = new Array();
    var Book[0] = [title: "1984", author: "George Orwell", publisher: "Harvill Secker", price: "€8.99"];
    var Book[1] = [title: "Metro 2033", author: "Dmitry Glukhovsky", publisher: "Orionbooks", price: "€12.99"];
    var Book[2] = [title: "Always Outnumbered, Always Outgunned", author: "Walter Mosley", publisher: "W. W. Norton & Company", price: "€5.99"];    
    var Book[3] = [title: "Journey to the Center of the Earth", author: "Jules Verne", publisher: "Pierre Jules Hetzel", price: "€4.99"];

I'm trying to figure out how to make an array of objects that have their own properties but this doesn't seem to work. I can't understand what's going on.

EDIT:

    var i;
    var Book = new Array();
    Book[0] = {title: "1984", author: "George Orwell", publisher: "Harvill Secker", price: "€8.99"};
    Book[1] = {title: "Metro 2033", author: "Dmitry Glukhovsky", publisher: "Orionbooks", price: "€12.99"};
    Book[2] = {title: "Always Outnumbered, Always Outgunned", author: "Walter Mosley", publisher: "W. W. Norton & Company", price: "€5.99"};    
    Book[3] = {title: "Journey to the Center of the Earth", author: "Jules Verne", publisher: "Pierre Jules Hetzel", price: "€4.99"};

    for (i = 0; i < 4; i++)
    {
        document.write("Book: " + Book[i].title + "Author: " + Book[i].author "Publisher: " + Book[i].publisher + "Price: " + Book[i].price);
    }

This is the updated code. This still doesn't work.

EDIT 2: Was missing a "+" in the document.write.

Upvotes: 0

Views: 48

Answers (2)

Neysi Tuesta
Neysi Tuesta

Reputation: 21

The syntax is incorrect.

Array is: [ ] Object is: { }

Besides the Book variable must be declared once.

The correct way is :

 var Book = new Array();
 Book[0] = {title: "1984", author: "George Orwell", publisher: "Harvill Secker", price: "€8.99"};
 Book[1] = {itle: "Metro 2033", author: "Dmitry Glukhovsky", publisher: "Orionbooks", price: "€12.99"};
 Book[2] = {title: "Always Outnumbered, Always Outgunned", author: "Walter Mosley", publisher: "W. W. Norton & Company", price: "€5.99"};    
 Book[3] = {title: "Journey to the Center of the Earth", author: "Jules Verne", publisher: "Pierre Jules Hetzel", price: "€4.99"};

Or 

Book.push ( {title: "1984", author: "George Orwell", publisher: "Harvill Secker", price: "€8.99"}) 
//...

Upvotes: 0

changtung
changtung

Reputation: 1624

You are passing array to your arrays, not objects.

  1. Change [ for {, since second is proper object definition.

  2. Don't use var twice. Once you have variable, you can use it without var.

    var Book = new Array();

Book[0] = {title: "1984", author: "George Orwell", publisher: "Harvill Secker", price: "€8.99"};

You can use it like this: 

alert(Book[0].title);

Upvotes: 2

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