[Hekumok]

function Obj(id) {
  this.id = id ;
}
for(var arr = [], j = 0; j < 5000000; j++)
  arr.push(new Obj(j)) ;
var init = "time" ;
const FINDID = 4999999 ;
function findEl(array) {
  var i = 0 ;
  array.some(function(obj) {
    i++ ;
    return obj.id === FINDID ;
  }) ;
  console.log("this is " + i + " element") ;
}
console.time(init) ;
findEl(arr) ;
console.timeEnd(init);