JavaScript includes method

In JavaScript, we use an array include() function to see if an array contains an element. If an array contains an element, the JavaScript includes() function returns true. Else, false is returned.

Syntax

array.includes(element, start)

Lets take an example of include function which returns true.

let alphabets = ['A', 'B', 'C', 'D']
console.log(alphabets.includes('B'))

Output

true

Lets take an example of include function which returns false.

let alphabets = ['A', 'B', 'C', 'D']
console.log(alphabets.includes('E'))

Output

false