let diem = 4; //0->4 ~=> 1->5
let tr_array = document.getElementsByClassName("answers-list");
for (let i = 0; i < tr_array.length; i++) {
  let td = tr_array[i].getElementsByTagName("td")[diem];
  td.onclick(td.value, td.name, td.type);
}
//hidang on github.com/hidang