[jQuery] Re: missing ( before formal parameters

[Erik Beeson]

>
> missing ( before formal parameters
>
> $("#postcode").change(function{$("#town").val(zipToCityHash.$("#postcode").val()...
>

Also, I see what you're trying to do there, but you can't access object
properties like that. You probably want something like:

$("#postcode").change(function() {
$("#town").val(zipToCityHash[$("#postcode").val()]); });

Plus, you don't need to select #postcode again. You can access it with
'this' in the event handler:

$("#postcode").change(function() { $("#town").val(zipToCityHash[this.value]);
});

And, if the user enters a zip that isn't in your hash, val() will get passed
undefined, which does the same thing as calling val() with no arguments: it
returns the current value without changing it. So if you want to change or
clear town if the user enters a zip that isn't in your hash, you could do
something like:

$("#postcode").change(function() {
   if(zipToCityHash[this.value]) {
      $("#town").val(zipToCityHash[this.value]);
   } else {
      $("#town").val(""); // clear town, or whatever you want to do in this
case
   }
});

Hope it helps.

--Erik