Hello - In jQuery is there any impact to calling methods on object references that don't exist?  For example, consider the following:

 

var currencyFields = {'aMyCurrX','aMyCurrY','aMyCurrZ'};

 

$(
   $.each(currencyFields, function(i){ FormatCurrency(currencyFields[i]); });
);

 

function FormatCurrency(fieldId)
{
   //just a placeholder for now
   alert($('#' + fieldId).value());
}

 

In the example above, the page is generated dynamically and not all curr fields will necessarily exist on the generated page. Defining these fields in a simple array will provide the best simplicity/maintainability.

 

But how does jQuery handle these errors? Is some error event triggered if jquery tries to exist a null object?  If not then is there any practical downside to using this approach against a small array of values?  Are there any scenarios that could potentially present gotchas with this approach?