CODE EXAMPLE FOR JAVASCRIPT

javascript string contains

// javascript string contains
var string = "foo",
    substring = "oo";

console.log(string.includes(substring));
// javascript string contains
var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
	alert("Not again");
}
// javascript string contains
var email = "grepper@gmail.com";
if(email.includes("@")){
  console.log("Email is valid");
}
else{
  console.log("Email is not valid");
}
// javascript string contains
const ParticipantsOfArtExhibition = [
	"Jhon",
  	"Amy",
  	"Liam"
]

ParticipantsOfArtExhibition.includes("Jhon") //true
ParticipantsOfArtExhibition.includes("Thompson") //false
ParticipantsOfArtExhibition.includes("Amy") //true