Answer by Mathias Bynens for Round the value in Javascript

This function will take any string and try to parse it as a number, then format it the way you described:

function makePretty(userInput) {  var num,      str;  num = parseFloat(userInput); // e.g. 0.03  str = userInput.toString();  if (!isNaN(num) && str.substring(0, 1) === '0') {    str = str.substring(1); // e.g. .03  } else if (isNaN(num)) {    str = userInput; // it’s not a number, so just return the input  }  return str;}makePretty('000.03'); // '.03'makePretty('020.03'); // '20.03'

It you feed it something it cannot parse as a number, it will just return it back.

Update: Oh, I see If the single leading zero needs to be removed as well. Updated the code.