In this tutorial, you’ll learn how to check if an array contains a value in JavaScript.

So, let get started...

1) Check if an array contains a string or number

To check if an array contains a string or number value, you can use the array method like array.includes()

const fruit= ['apple', 'banana', 'avocado'];
const result = fruit.includes('banana');

console.log(result); // true

Note: Includes is case sensitive

2)Using Some Method

The some() method tests whether at least one element in the array passes the test implemented by the provided function. It returns a Boolean value.

const array = ['Sam', 'John', 'Alex'];


array.some(name => name === 'John');//true

 Some() is ideal for an array of objects.

const array = [{ name: 'Sam' }, { name: 'Alex' }];


array.some(code => code.name === 'Alex'); // true

array.some(code => code.name === 'John'); // false