javascript limit to 3 decimal places code example

Example 1: limit numbers after decimal point in javascript

var num = 5.56789;

var n = num.toFixed(2);

Example 2: javascript limit input to 2 decimal places

var validate = function(e) {
  var t = e.value;
  e.value = (t.indexOf(".") >= 0) ? (t.substr(0, t.indexOf(".")) + t.substr(t.indexOf("."), 3)) : t;
}