Modify javascript to catch when user click a spec filter

We would like to hook in to the javascript for when someone clicks on a filter, to trigger some javascript that is run BEFORE the filtering takes place.
The reason for this is that when a user clicks some specific filters, we want to automatically click other filters.
Can you clarify the best way of achieving this?

Hi,

This could cause an error if you select several more filter options when specific one is selected, because the other options can be disabled after specific filtration.
For example if you have this filter group:

Option A
Option B
Option C

After you click option A you may want to select Option B as well, but Option B may be unavailable after filtration which will cause error.

This is why we do not provide a way to do this.

Surely I just need to check that the item is not disabled before ticking it though?

To clarify, I want to tick options within the same group. Ticking one option from a group will not disable other items from the same group, so I cannot see why there would be a problem.

Actually you could not do this before the filtering is done, because the available filters are returned by the server.



You are right. It was a bad example. And when you need to do it only for one filter group at a time, it is ok.
You will need to add a click event to every anchor element in your filter group and in the handler change the filterItemUnselected class to filterItemSelected, for every other filter option you want to select.

Thank you Iliyan

This is not working.
Whilst the code I have added sets the item to appear selected momentarily, it then deselects itself straight afterwards. I assume there is something in your javascript that checks the links once the ajax call has been made, and corrects any that are incorrect.
Can you take a look and let me know?

Hi,

Probably your implementation changes the class after the filtration is complete. This will cause the changed classes to be corrected by the Filter JavaScript. 

Yes, hence my ORIGINAL question "to trigger some javascript that is run BEFORE the filtering takes place"

Hi,

We are not sure if this is possible without the Filters JavaScript. Could you submit a ticket about this and we will continue the conversation there.