Is Integer Array ?

gistfile1.txt

function isIntArray(arr) {
console.log(arr);

if (arr == null) return false;
if (arr.constructor !== Array || arr == null) return false;

if (arr.length < 1) return true;
for (var i = 0; i < arr.length; i++)
if ((arr[i] % 1 != 0)) return false;
else
  var check = isInt(arr[i]);
  return check;
}

function isInt(value) {
  return !isNaN(value) && Number.isInteger(value) && (value.toFixed(0) % 1 == 0) &&
         parseInt(Number(value)) == value;
}