Introduction to JavaScript Arrays

An array is an ordered list of values. Each value is called an element specified by an index:

A JavaScript array has the following characteristics:

First, an array can hold values of mixed types. For example, you can have an array that stores elements with the types number, string, boolean, and null.

Second, the size of an array is dynamic and auto-growing. In other words, you don’t need to specify the array size up front.