Question

I have counter and sometimes it can get very big number, so I need to convert numbers like:

1300 => 1.3K
1000000 => 1M

And so on. How is this possible in JavaScript?

Answer 1

// Truncate a number to ind decimal places
function truncNb(Nb, ind) {
  var _nb = Nb * (Math.pow(10,ind));
  _nb = Math.floor(_nb);
  _nb = _nb / (Math.pow(10,ind));
  return _nb;
}
// convert a big number to k,M,G
function int2roundKMG(val) {
  var _str = "";
  if (val >= 1e9)        { _str = truncNb((val/1e9), 1) + ' G';
  } else if (val >= 1e6) { _str = truncNb((val/1e6), 1) + ' M';
  } else if (val >= 1e3) { _str = truncNb((val/1e3), 1) + ' k';
  } else { _str = parseInt(val);
  }
  return _str;
}