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hi

that is not a good way of validation. Catching individual keystrokes 
will eat away lots of memory and browser may hang or become very slow

if possible do all validations at the time you are submitting the form. 
if you want an immidiate effect use onBlur event
<input type=3D"text" onBlur=3D"checknumbers(this);">

for allowing only numbers, call the function isNumber() and pass the 
string you want to validate as argument to it. and it will return 
boolean value true or false.

<script language=3D"javascript">
function checknumbers(e)
{
 if (isNumber(e.value) =3D=3D false)
 {
  alert("Please enter a valid integer.");
  e.focus();
  return false;
 }
}

function isNumber(e)
{
 var valids =3D "1234567890"
 for (var i=3D0 ; i < e.length ; i++ )
 {
  if (valids.indexOf(e.charAt(i)) =3D=3D -1 ) return false;
 }
}
</script>

  ----- Original Message -----
  From: Shaukat Desai
  To: javascript
  Sent: Sunday, November 19, 2000 6:14 PM
  Subject: [javascript] numeric values only


  Hi, 

  I have the following script which only allows numeric values, I want 
to be
  able to allow for the delete key as well, can someone advise me on how 
I
  can do this.

  Thanks

  Script:-

  <SCRIPT language=3Djavascript>
  var isIE =3D document.all?true:false;
  var isNS =3D document.layers?true:false;

  function OnlyDigits(e) {
  var bolOnlyDigits =3D true;

  if (isIE) {

  if (window.event.keyCode < 46 || window.event.keyCode > 57)
  {
  window.event.keyCode =3D 0;
  bolOnlyDigits =3D false;
  }

  }

  if (isNS) {
  if (e.which < 46 || e.which > 57) {
  e.which =3D 0;
  bolOnlyDigits =3D false;
  }
  }

  return (bolOnlyDigits);
  }
  </SCRIPT>

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