how to check if string includes something code example

Example 1: includes in javascript

var colors = ['yellow', 'red', 'pink'];
var string = 'yellow and red are pretty cool';

// outputs false
console.log(colors.include('blue');
// outputs true
console.log(string.includes('yellow');

Example 2: javascript string contains

var string = "foo",
var substring = "oo";

console.log(string.includes(substring));