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VOOZH | about |
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VOOZH | about |
Arrays in JavaScript consist of a list of elements. JavaScript has many useful built-in methods to work with arrays. Methods that modify the original array are known as mutator methods, and methods that return a new value or representation are known as accessor methods. In this tutorial, we will focus on mutator methods.
In order to get the most out of this tutorial, you should have some familiarity with creating, indexing, modifying, and looping through arrays, which you can review in the tutorial Understanding Arrays in JavaScript.
Arrays are similar to strings, in that they both consist of a sequence of elements that can be accessed via index number. However, it is important to remember that strings are an immutable datatype, meaning they cannot be changed. Arrays, on the other hand, are mutable, which means that many array methods will affect the original array, not a copy of the array.
This tutorial will go through adding and removing elements, reversing, replacing, and otherwise modifying elements in an array.
Note: Array methods are properly written out as Array.prototype.method(), as Array.prototype refers to the Array object itself. For simplicity, we will simply list the name as method().
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JavaScript is a high-level, object-based, dynamic scripting language popular as a tool for making webpages interactive.
Browse Series: 37 tutorials
An array in JavaScript is a type of global object used to store data. Arrays can store multiple values in a single variable, which can condense and organize our code. JavaScript provides many built-in methods to work with arrays, including mutator, accessor, and iteration methods.
Browse Series: 4 tutorials
Software engineer and open source creator
Community and Developer Education expert. Former Senior Manager, Community at DigitalOcean. Focused on topics including Ubuntu 22.04, Ubuntu 20.04, Python, Django, and more.
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That’s a great article. Inspired me to write a 3 part series over Arrays in JS:
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