Last Updated : 11 Jul, 2025
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);Parameters
Return Value :It returns a Boolean value i.e., either True or False.
Example of JavaScript Array includes() MethodHere’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.
// 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);
Example 2: Searching for a string in an array
In 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.
// 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);
We have a complete list of Javascript Array methods, to check those please go through this Javascript Array Complete referencearticle.
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