numeric value?

[Mikael Hellström]

Hi,
I'm looking for a "built in function" to check if a value is
a numeric value. Is there a function like this in Java script...?
Regards Mikael

 

[Hywel Jenkins]

Hi,
I'm looking for a "built in function" to check if a value is
a numeric value. Is there a function like this in Java script...?

Yes. Did you try comp.lang.javascript?

isNaN()

 

[Mikael Hellström]

Well...
I try to do this...

else if ( (form.pristextfield.value!= "") &&
IsNaN(form.pristextfield.value)==false )
{
alert('priset måste vara ett heltal!');
form.pristextfield.focus();
return false;
}

i get a error message

Regards mikael

 

[Hywel Jenkins]

Well...
I try to do this...

else if ( (form.pristextfield.value!= "") &&
IsNaN(form.pristextfield.value)==false )
{
alert('priset måste vara ett heltal!');
form.pristextfield.focus();
return false;
}

i get a error message

What's the URL with this code? If what you've posted here is excactly
what you've got the error is obvious: your first line has "else if" -
what's before that?

Perhaps telling us the error would have helped. Besides, it's isNaN not
IsNaN, isn't it? This page may be of help:
http://www.allmyfaqs.com/faq.pl?How_to_post