creating a array in javascript

Question

is this:

var arr = {};

the same as

var arr = new Array();

?

Darin Dimitrov · Accepted Answer · 2011-02-07 13:48:52Z

7

It is not the same.

var arr = {};

initializes an object. If you want an array:

var arr = [];

answered Feb 7, 2011 at 13:48

Darin Dimitrov

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1 Comment

Fran Verona Over a year ago

Just to complete the answer: developer.mozilla.org/en/JavaScript/Reference/Global_Objects/…

Daniel A. White · Accepted Answer · 2011-02-07 13:48:31Z

4

not exactly. var arr = []; is more like it.

answered Feb 7, 2011 at 13:48

Daniel A. White

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Comments

Justin Niessner · Accepted Answer · 2011-02-07 13:49:12Z

2

No.

var arr = {}; // creates a new object with no properties

But

var arr = []; // creates a new blank array

answered Feb 7, 2011 at 13:49

Justin Niessner

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Comments

Ankur · Accepted Answer · 2011-02-07 13:49:27Z

1

var arr = {}; creates object

answered Feb 7, 2011 at 13:49

Ankur

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Comments

Christoph · Accepted Answer · 2011-02-07 14:12:55Z

1

No, it's not: You're confusing array literals

var arr = []; // same as new Array()

with object literals

var obj = {}; // same as new Object()

answered Feb 7, 2011 at 14:12

Christoph

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