JavaScript Array includes() Method Last Updated : 15 Oct, 2024 Comments Improve Suggest changes Like Article Like Report The includes() method in JavaScript returns true if an array contains a specified value, and false if the value is not found. This method simplifies checking for the presence of an element within an array, offering a quick and efficient way to return a boolean result. Syntaxarray.includes(searchElement, start);ParameterssearchElement: This parameter holds the element that will be searched.start: This parameter is optional and it holds the starting point of the array, where to begin the search the default value is 0.Return Value :It returns a Boolean value i.e., either True or False.Example of JavaScript Array includes() Method Here’s an example of the JavaScript Array.includes() method:Example 1: Searching for a number in an arrayIn this example, the includes() method checks if the number 2 is present in the array A. javascript // Taking input as an array A // having some elements. let A = [1, 2, 3, 4, 5]; // includes() method is called to // test whether the searching element // is present in given array or not. a = A.includes(2) // Printing result of includes(). console.log(a); Outputtrue Example 2: Searching for a string in an arrayIn this example, the includes() method checks if the string 'cat' is present in the array name. Since 'cat' is not in the array, it returns false. javascript // Taking input as an array A // having some elements. let name = ['gfg', 'cse', 'geeks', 'portal']; // includes() method is called to // test whether the searching element // is present in given array or not. a = name.includes('cat') // Printing result of includes() console.log(a); Outputfalse We have a complete list of Javascript Array methods, to check those please go through this Javascript Array Complete referencearticle.Supported BrowsersGoogle ChromeEdge Firefox OperaSafari Comment More infoAdvertise with us K Kanchan_Ray Follow Improve Article Tags : JavaScript Web Technologies javascript-array JavaScript-Methods Similar Reads JavaScript Array() Constructor The Array() constructor is used to create Array objects and the array constructor can be called with or without a new keyword, both can create a new Array.Syntax:new Array(Value1, Value2, ...);new Array(ArrayLength);Array(Value1, Value2, ...);Array(ArrayLength);Parameters: ValueN: An array initializ 2 min read JavaScript Array constructor Property The JavaScript Array constructor property is used to return the constructor function for an array object. 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