How to ensure COMMAS are not entered into form field 1

andy98 · Jul 29, 2004

Hi

I have the following validation in my form.

<SCRIPT LANGUAGE="JavaScript1.2">
<!-- Hide from other browsers

function validate(regForm)
{

if (regForm.Firstname.value =="")
{
window.alert("Please enter your Firstname");
return false;
}

}

and my form starts like this..

<form method=post action="submit.php" onsubmit="return validate(this)">

How would I ensure that the Firstname field in my form was not blank or didn't contain commas?

Any help appreciated

kaht · Jul 29, 2004

add this to your validation function:

Code:

if ((/[,]/).test(regForm.Firstname.value)) {
   alert("Firstname field cannot contain commas");
}

-kaht

andy98 · Jul 29, 2004

Kaht

Thanks for that - it works a treat. I was wondering whether it would be more friendly if I stripped them out on entry into the field. Is that something I could do?

kaht · Jul 29, 2004

Sure you can do it, as far as it being friendly.... I guess that's for the users to decide.

Code:

<script language=JavaScript>

function checkForComma(obj) {
   str = obj.value;
   if (str.charAt(str.length - 1) == ',') {
      obj.value = str.substr(0, str.length - 1);
   }
}

</script>
<body>
<form name=blahForm>
<input type=text onkeyup='checkForComma(this)'>
</form>
</body>

personally I'd use the above solution so the users aren't confused about why the commas are disappearing

-kaht

andy98 · Jul 29, 2004

Yes - I think you're right Kaht.

Thanks for your help

Andy

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

How to ensure COMMAS are not entered into form field 1

andy98

Programmer

kaht

Programmer

andy98

Programmer

kaht

Programmer

andy98

Programmer

Similar threads

Part and Inventory Search

Sponsor