javascript function to find element not in array code example

Example: how to Check if an array contains a string

// To check if an array contains a string 

const colors = ['red', 'green', 'blue'];
const result = colors.includes('red');

console.log(result); // true

// Or 

const colors = ['Red', 'GREEN', 'Blue'];
const result = colors.map(e => e.toLocaleLowerCase())
                     .includes('green');                          

console.log(result); // true