JS Arrays

JavaScript arrays are used to store multiple values in a single variable. Arrays are a special kind of objects.

Creating an Array

Using an array literal is the easiest way to create a JavaScript Array.

const array_name = [item1, item2, ...];

Accessing Array Elements

You access an array element by referring to the index number. Array indexes start with 0. [0] is the first element. [1] is the second element.

Changing an Array Element

You can also assign a new value to an array index.

Array Properties and Methods

The real strength of JavaScript arrays are the built-in array properties and methods.

• length Property: Returns the number of elements in an array.
• push() Method: Adds a new element to an array (at the end).
• pop() Method: Removes the last element from an array.