I am capturing MatSelectChange events from a dynamic forms library in my .ts file. This works just fine, but when I capture the event, I don't know how to acquire the previously selected value. Getting the current value is easy, I am surprised that the prior value isn't immediately available for access. The event contains access to $event.value and $event.source. I have tried to dig deep into the source member, but I can't find the previous value there either as it is just the current select control. Link to API Continue reading...
