'Blue Whale'.includes('blue') // returns false
var str = "Hello world, welcome to the universe.";
var n = str.includes("world");
const s = 'I am going to become a FULL STACK JS Dev with Coderslang';
console.log(s.includes('FULL STACK')); // true
console.log(s.includes('cheeseburger')); // false
Array.includes(foo)
String.contains(bar)
//will return bolean value like(this equation is true or false)