Edit in JSFiddle

const userList = [
  { name: 'Alex', age: 51, country: 'USA' },
  { name: 'Varun', age: 26, country: 'India' },
  { name: 'Raman', age: 16, country: 'India' },
  { name: 'Max', age: 11, country: 'USA' },
  { name: 'Vishal', age: 32, country: 'India' }
];

/*  Finding if there is any India User */
const indianUserExist = userList.some(user => {
  return user.country === 'India';
});
/*  Printing variable indianUserExist */
console.log('Is there any Indian User:-',indianUserExist);


/*  Finding if there is any User whose age is greater than 18 */
const eighteenPlusUserExist = userList.some(user => {
  return user.age > 18;
});
/*  Printing  variable eighteenPlusUserExist */
console.log('Is there any 18+ user:-',eighteenPlusUserExist);


/*  Finding if there is any UAE User */
const uaeUserExist = userList.some(user => {
  return user.country === 'UAE';
});
/*  Printing variable uaeUserExist */
console.log('Is there any UAE User:-',uaeUserExist);