Array of Literal Arrays JavaScript

Question

I have a JavaScript code like that:

var faqOpener = {
   defaults: {
      idSelector: "#id",
      id: "2"
   },
...
  if (options && !jQuery.isEmptyObject(options))
     $.extend(this.defaults, options);
...

How can I convert that variable as an array of literal arrays something like:

var faqOpener = {
   defaults[]: {
      idSelector: "#id",
      id: "2"
   },
...

EDIT: I will use that defaults variable from another javascript code. As shown in the example it has only one element at array of literal arrays however I should define it correctly and will able to pass variable length(for example array of literal arrays that has 3 array or 1 or more it depends) array of literal arrays.

Mike Gleason jr Couturier · Accepted Answer · 2011-03-10 16:10:46Z

4

var faqOpener = {
   defaults: [{
      idSelector: "#id1",
      id: "1"
   }, 
   {
      idSelector: "#id2",
      id: "2"
   }],
...

or straight

var defaults = [{
   idSelector: "#id1",
   id: "1"
}, 
{
   idSelector: "#id2",
   id: "2"
}];

The question is rather unclear...

answered Mar 10, 2011 at 16:10

Mike Gleason jr Couturier

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Comments

Josiah Ruddell · Accepted Answer · 2011-03-10 16:11:51Z

3

var faqOpener = {
   defaults: [
       { idSelector: "#id", id: "2" },
       { idSelector: "#id1", id: "21" }
   ]
};

Then you can access the objects in defaults:

faqOpner.defaults[0] 
faqOpner.defaults[1]

answered Mar 10, 2011 at 16:11

Josiah Ruddell

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2 Comments

Mike Gleason jr Couturier Over a year ago

Maybe the items in "defaults" are gigantic objects

Mike Gleason jr Couturier Over a year ago

the "presentation" won't fit on one line

kamaci · Accepted Answer · 2011-03-10 18:01:19Z

1

Try this:

var faqOpener = {
   defaults: [{
      idSelector: "#id",
      id: "2"
   }],
...

Can be used like this:

faqOpener.defaults[0].id

edited Mar 10, 2011 at 18:01

kamaci

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answered Mar 10, 2011 at 16:13

Alexander Kahoun

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Comments

15ee8f99-57ff-4f92-890c-b56153 · Accepted Answer · 2011-03-10 16:36:23Z

1

Do you want faqOpener.defaults to be an array of objects { idSelector, id }? In JS, an array literal is delimited by square brackets, so it'd look like this:

var faqOpener = {
    defaults: [ 
       {
              idSelector: "#id",
              id: "2"
           },
           {
              idSelector: "#id3",
              id: "3"
           },
        ]
    };

That's not an array of arrays, exactly; it's an array of associative arrays. An "array" in JavaScript is a particular object type with some special characteristics. Any old JS object is an assocative array.

edited Mar 10, 2011 at 16:36

answered Mar 10, 2011 at 16:12

15ee8f99-57ff-4f92-890c-b56153

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1 Comment

15ee8f99-57ff-4f92-890c-b56153 Over a year ago

Any variable or property in JS can hold a reference to an array of associative arrays -- or more tersely, an array of objects; any JS object is an associative array. Sorry, I should have used that term and saved you some typing! What the answers have given you is how to declare a literal array of objects/AAs. If you've already got such an array from somewhere else, and you just want to assign it to a member, that's the easiest thing in the world: faqOpener.defaults = arrayfromwherever;

TimS · Accepted Answer · 2011-03-10 16:11:48Z

0

This is commonly known as JSON (JavaScript Object Notation):

http://www.json.org/example.html

answered Mar 10, 2011 at 16:11

TimS

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1 Comment

Lightness Races in Orbit Over a year ago

Actually, strictly speaking, JSON is a separate markup language that is derived from and that mimicks Javascript's syntax. Though you're right, the syntax will be identical here.

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