Definition: The Array class is used to define a collection of variables that are related together. You can then refer to the individual variables within the array either by their position in the array eg myEntry[3] to access the fourth entry (the first entry is 0) or by name eg myEntry[red]. This is not a reserved word so you can declare your own variable or function called Array but if you do then you will not be able to use the Array class.
Examples:
var mess = new Array();