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An array is an ordered collection of data (either primitive or object depending upon the language). Arrays are used to store multiple values in a single variable. This is compared to a variable that 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

What an array in JavaScript looks like:

var myArray = [1, 2, 3, 4];

var catNamesArray = ["Jacqueline", "Sophia", "Autumn"];

//Arrays in JavaScript can hold different types of data, as shown above.

Learn more

General knowledge

Technical reference

  • JavaScript Array on MDN

 

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 Last updated by: KurtHarlandLarson,