Arrays

- Regular variables are great for storing numbers,…strings, and other single items.…But what do you do if you have several related items…and you want to store them all at the same time…like a list of things.…For that we have a special type of variable called an array.…The array is one of the cornerstones…of Java script programming…and moving forward you'll see me use arrays…in many different ways for different purposes.…An array is literally an array where you can store…as few or as many items as you like…and retrieve one of, some of, or all of those items.…

To create an array first create an undefined variable…so var pens.…Then add the different values…to the array using a comma separated list wrapped…in square brackets…so something like pens equals red, blue, green, orange.…This is a shorthand for the full command…pens equals new array red, blue, green, orange…which produces the exact same array.…

This long hand tells us an array is an object…which we'll talk more about later.…One interesting note about arrays…