javascript text includes code example

Example 1: javascript string includes

'Blue Whale'.includes('blue')  // returns false

Example 2: .includes( string

var str = "Hello world, welcome to the universe.";
var n = str.includes("world");

Example 3: string.contains javascript

var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
	alert("Not again");
}