tranphuongdinh

// tinh diem trung binh hcmus, vao trang diem va paste vao console.
// khong tinh anh van, quoc phong, the duc va nhung mon rot


var tinchi = document.querySelectorAll("td:nth-child(3)");
var monhoc = document.querySelectorAll("td:nth-child(2)");
var diem = document.querySelectorAll("td:nth-child(6)");
var diemtren = 0,
  diemduoi = 0;
for (var i = 1; i < tinchi.length; i++) {