includes

includes() function

Checks if the specified value is equal. (contains)

Signature:

declare function includes<T extends readonly []>(value: unknown, iterable: T): false;

Returns:

false

Example

includes('c', 'abcd'); // true
includes('e', 'abcd'); // false
includes(3, [1,2,3,4]); // true
includes(5, [1,2,3,4]); // false