Arrays can be created in following ways:

Constructor:

var colors = new Array(); // array

var colors = new Array("blue","green","brown"); // array with 3 colors

var colors = new Array(5); //  array with 5 items

Array Literal:

var colors = [];

var colors = ["blue","green","brown"];

Properties
PROPERTY DESCRIPTION
length Returns the number of items an array contains.

Conversion methods
METHOD DESCRIPTION
toLocaleString() Returns the array items as strings, converted by the locale rules.
toString() Returns the array items as strings.
valueOf() Returns the array items as strings.
join() Changes the separator / delimiter between array items.

Stack methods
METHOD DESCRIPTION
push() Adds given items to an array.
pop() Removes the last added item from array.

Queue methods
METHOD DESCRIPTION
shift() Removes the first item added to an array.
unshift() Adds given items to the front of an array.

Re-ordering methods
METHOD DESCRIPTION
reverse() Reverses the order of items in an array.
sort() Sorts items in acsending order, from smallest to largest.

Manipulation methods
METHOD DESCRIPTION
concat() Creates a new array based on the items from another existing array or arrays.
slice() Creates an array that contains one or more items from another array.
splice() Inserts new items into an existing array and / or deleting old items.