JAVASCRIPT

javascript string contains character

var email = "grepper@gmail.com";
if(email.includes("@")){
  console.log("Email is valid");
}
else{
  console.log("Email is not valid");
}
// includes return boolean, if your string found => true else => false

js contain character

bigstring.includes("string") // return true or false

String contains in javascript

let text = "Hello world, welcome to the universe.";
let result = text.includes("world"); // return boolean value