Allowing only numbers and one decimal

Question

Guys and gals i have this piece of JavaScript code that only allows for numbers and one decimal period. The problem i\'m having is that when i tab over to my textbox contro

Answer 1

Here is a sample solution that will accept a number with one(1) decimal point only. e.g 1.12, 11.5

Enter a number with one(1) decimal point only

 


$('.decimalPt').keypress(function(evt) {
  evt = (evt) ? evt : window.event;
  var charCode = (evt.which) ? evt.which : evt.keyCode;
  if (charCode == 8 || charCode == 37) {
    return true;
  } else if (charCode == 46 && $(this).val().indexOf('.') != -1) {
    return false;
  } else if (charCode > 31 && charCode != 46 && (charCode < 48 || charCode > 57)) {
    return false;
  }
  return true;
});

Take a look at this: https://jsfiddle.net/sudogem/h43r6g7v/12/