Use Array.some method which will tests whether at least one element in the array passes the test

const ELEMENT_DATA = [{
    position: 1,
    name: 'Hydrogen',
    weight: 1.0079,
    symbol: 'H'
  },
  {
    position: 2,
    name: 'Helium',
    weight: 4.0026,
    symbol: 'He'
  },
  {
    position: 3,
    name: 'Lithium',
    weight: 6.941,
    symbol: 'Li'
  },
  {
    position: 4,
    name: 'Beryllium',
    weight: 9.0122,
    symbol: 'Be'
  }
];
let m = ELEMENT_DATA.some(function(item) {
  return item.name === 'Helium'
});
console.log(m)

You can use array.prototype.some along with array.prototype.includes. It shoud be:

var datas= [
  ["aaa", "bbb"],
  ["ddd", "eee"]
];

function exists(arr, search) {
    return arr.some(row => row.includes(search));
}

console.log(exists(datas, 'ddd'));
console.log(exists(datas, 'xxx'));