checking for special characters

hungnguyen · May 16, 2001

Hi all,

I have a problem which is I would like to check a text box whether user type some special characters as %, ", ', ^, ~, |. For example, I have a text box name LastName. If user enter as L'Fenta, there would be a message to notify user know that he/she can't enter the character '. I believe that in VBscript we have a function instr; however, how it can be done in Javascript.
Thanks
Hung Nguyen

Deltaflyer · May 16, 2001

Try indexOf

i.e.

<script>
function SCIB(){
var s1 = "'"
var s2 = document.form.field.value
var s = s2.indexOf(s1);
if (s!=-1)
{alert('No Go Honcho!');}
}
</script>
<body>
<form name=form>
<input type=text value='' name=field>
</form>
<a href=javascript:SCIB("'&quot

>Try Me</a>
</body>

Hope that helps. DeltaFlyer ;-)

DeltaFlyer - The Only Programmer To Crash With Style.

Guest_imported · May 16, 2001

DeltaFlyer,

It does not working. However, I would like to ask you a question what is indexOf function. Where doyou get that function??
Thanks for your help
Hung Ngguyen

Deltaflyer · May 18, 2001

If you send me an email i will send you the javascript language reference. Can't remember the address at MSDN, sorry.

deltaflyer@bolt.com
DeltaFlyer ;-)

DeltaFlyer - The Only Programmer To Crash With Style.

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checking for special characters

hungnguyen

Programmer

Deltaflyer

Programmer

Guest_imported

New member

Deltaflyer

Programmer

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