How to avoid Decimal values in input type number

An alternative to the supplied answers is to monitor the keypress while in the input. I personally like leaving the type="number" as an attribute. Here’s a JSFiddle

<form action="#" method="post">
  Numbers: <input name="num" 
                  type="number"
                  min="1"
                  step="1"
                  onkeypress="return event.charCode >= 48 && event.charCode <= 57"
                  title="Numbers only">
  <input type="submit">
</form>