Numeric Validation in Javascript

Numeric Validation Method

function onlyNumbers(evt)
{
    var e = event || evt; // for trans-browser compatibility
    var charCode = e.which || e.keyCode;

    if (charCode > 31 && (charCode < 48 || charCode > 57))
        return false;

    return true;

}

Character Validation Method

function onlyAlpha()
{
  var keyCode = window.event.keyCode;
   if ((keyCode < 65 || keyCode > 90) &&
    (keyCode < 97 || keyCode > 123) && keyCode != 32)
     return false;

   return true;
}

*****Output******

Accept only Number :

Accept only Character :

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