An array is an ordered collection of data (either primitive or object depending upon the language). Arrays are used to store multiple values under a single variable name. A regular variable, on the other hand, can store only one value.
Each item in an array has a number attached to it, called a numeric index, that allows you to access it. In JavaScript, arrays start at index zero and can be manipulated with various methods.
Arrays in JavaScript look like this:
// Arrays in JavaScript can hold different types of data
const myArray = [1, 2, 3, 4];
const barbieDollNamesArray = ["Barbie", "Ken", "Midge", "Allan", "Skipper"];
// Array indexes starts at 0.
console.log(myArray[0]); // output: 1
console.log(barbieDollNamesArray[2]); // output: "Midge"
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