Question

I found this very short clean code to only allow numeric chars in a text field. Currently it only covers numbers 0-9 and backspace and delete. I wanted it to also include decimal/period, so I have been fighting with this to simply include keycode 110 and/or 190. I can not get it to work. Can anyone see what I am doing wrong?

$(document).ready(function() {
    $('input.numberinput').bind('keypress', function(e) { 
return ( e.which!=8 && e.which!=0 && (e.which<48 || e.which>57) ) || (e.which!=110) ? false : true ;
  });
  });

jsfiddle here: http://jsfiddle.net/justmelat/EN8pT/

html

         <div class="label">Enter a number:</div>
        <input type="text" name="txtNumber1" id="txtNumber1" value=""  class="numberinput" />

         <div class="label">Enter a number:</div>
        <input type="text" name="txtNumber2" id="txtNumber2" value="" class="numberinput" />
    </div>

Answer 1

Try:

$(document).ready(function () {
    $('input.numberinput').bind('keypress', function (e) {
        return !(e.which != 8 && e.which != 0 &&
                (e.which < 48 || e.which > 57) && e.which != 46);
    });
});​

JsFiddle: http://jsfiddle.net/EN8pT/1/