• JavaScript Tutorial
• JavaScript Array Object
• Declaring an array
• Multidimensional arrays
• Referencing array elements
• Associative arrays
• JavaScript Array Properties
• Array length property
• Array constructor property
• Array prototype property
• JavaScript Array Methods
• concat() method
• join() method
• pop() method
• push() method
• reverse() method
• shift() method
• slice() method
• sort() method
  • Custom sorting function
  • Randomize array elements
• splice() method
• toString() method
• unshift() method
• Other JavaScript Objects
• JS Number Object
• JS RegExp Object
• JS String Object

→ JavaScript Tutorial → JavaScript Array Object →

JavaScript Multidimensional Arrays

We learned how to declare arrays in JavaScript: we saw arrays containing a series elements, none of which was an array. But JavaScript also supports multidimensional arrays: arrays whose elements are arrays.

Tables are good metaphors for multidimensional arrays: rows contain multiple cells; while independent, each cell belongs to the same row. The table is the multidimensional array, and rows, its elements.

Declaring a Multidimensional Array in JavaScript

When we showed you how to declare one-dimensional arrays, we covered three declaration methods. All three can be used with multidimensional arrays; this tutorial only mentions the literal notation and array constructor.

Using the Literal Notation

The same syntax is used to declare multidimensional arrays: we simply "nest" the declaration, as shown below.

In the JavaScript code above, we created a 3x2 multidimensional array; if it were represented as a table, the array would look like this:

Using the Array Constructor

There is another, more explicit way to declare multidimensional arrays in JavaScript, by creating arrays inside arrays:

We first created a standard array, then made it multidimensional by declaring its elements as arrays themselves. We will now show you how to reference array elements in JavaScript, for both one- and multidimensional arrays.

Browser support for JavaScript multidimensional arrays