Ok,

got the error. It wasn't wicket but an required resource send an old version 
not having the expected var definition; I need to change to an typeof check 
since I cant seem to get this reliable. Thanks anyway.

Best,

KB

----- Urspr√ľngliche Mail -----
> Von: "Sven Meier" 
> An: "users" <users@wicket.apache.org>
> Gesendet: Donnerstag, 2. April 2020 17:56:53
> Betreff: Re: Wicket.Ajax.Call.processEvaluation // how to not get reference 
> errors in case one has to check for a var?

> Hi Korbinian,
> 
> Wicket just evaluates your JS, if you get a ReferenceError then surely
> there's something wrong in your code.
> 
> Are you sure you're looking on the correct source line?
> 
> Have fun
> 
> Sven
> 
> 
> On 02.04.20 15:57, Korbinian Bachl wrote:
>> Hi,
>>
>> i've added some JS to be exectued after AJAX but wicket always sees an error
>> where none is:
>>
>> Wicket.Ajax:  Wicket.Ajax.Call.processEvaluation: Exception evaluating
>> javascript: ReferenceError: etCommerce is not defined, text: (function(){var 
>> p=
>> {
>>     ...
>> }
>> if(etCommerce) { etCommerce.sendEvent('insertToBasket', product, 1); }})();
>>
>> Here we get an error that etCommerce is not defined - thats right but it is
>> checked for it with "if(etCommerce)", so its perfectly valid JS?
>>
>> Also if I user if(etCommerce !== 'undefined') nothing changes as well, error
>> stays?!?
>>
>> How can I get rid of these console alarms? And why is this also done in
>> production mode?
>>
>> Best,
>>
>> KB
>>
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