i might have posted this awhile ago but i dont remember an answer. I need a javascript zip code validator that will work onblur. I would do it myself because i dont think it should be that hard but i dont remember regular expressions at all someone wanna hammer that reg expression or a working function out for meh

http://javascript.internet.com/forms/val-zip-code.html

I tried that one but when it ran it asked for a zip code. i dont need to ask for a zip there's a field supplied. I removed the part that asked for a zip but then it didnt even work.

That'll be this thread then.

o yeah. You showed me this

function isZipCode(value) {
   var RegExp = /^\d{5}([\-]\d{4})?$/;
   return (RegExp.test(value));
}

Now if i want to use that onblur how would i go about doing this?

if(RegExp.test(value) != true)
{
alert("You input an invalid zip code");
}

??

If (isZipCode(value)) ...

still confused .... do you make another javascript function that tests to see if the regular expression passed?

No, that function will return true or false depending on the outcome of the test

ok this is what i have and no matter what you put in it says you put a wrong zip in

function zipCheck(value) 
{
   var RegExp = /^\d{5}([\-]\d{4})?$/;
   
if(!RegExp.test(value))
{
    alert("You input an invalid zip code");
}

}

i hate javascript

<script type="text/javascript">
function isZipCode(value) {
   var RegExp = /^\d{5}([\-]\d{4})?$/;

   if (!RegExp.test(value)) {
   alert("Error in Zip Code");
   }
}
</script>

<input type="text" name="zip" value="" onBlur="isZipCode(this.value);">

works for me OK. How are you calling the function?

BAH! that was so stupid. in the form i had onblur=zipCheck(this) not onblur=zipCheck(this.value)



thanks for bearin with me on this one