Now we will use a couple of examples to show how the includes() method actually works. How to search an element/item in an array using includes method (JavaScript) Use Option + ⌘ + C keyboard shortcut keys in Safari (if the developer menu does not appear, open Preferences by pressing ⌘ +, and in the Advanced tab, check “Show Develop menu in menu bar”).Use CTRL + SHIFT + K keyboard shortcut keys for Mozilla.Use the F12 key in Chrome and other chromium-based browsers.

Note: We will use the browser console to demonstrate examples performed in this post. Since this article is about JavaScript, we will only use includes() in our article from here on. The includes() and contains() both have the same functionality, but in JavaScript, this functionality is termed as includes(), while in other programming languages such as Java, it is called contains(). It is used in other languages such as Java. Modern browsers have Arrayincludes, which does exactly that and is widely supported by everyone except IE: console.log ( joe, jane, mary. The includes() is a method present in JavaScript, whereas contains() is not present in JavaScript. The includes and contains both methods search for a substring within a string or find elements within an array.

It is 0 by default.ĭifference between includes() and contains() It gives the index at which to start the search. starting_point: This parameter is optional.It is the element that needs to be searched within the array. element: The first parameter is required.This method searches the array for the given value and returns its index. The simplest and fastest way to check if an item is present in an array is by using the Array.indexOf() method. The include() method takes two parameters in JavaScript: The includes() method doesn't work in IE and is only available in modern browsers.

Js array includes