Angular Output 通过 emit 发送一个值

Question

I have an Output variable that looks like this

@Output() selectedValue = new EventEmitter<{in: any, out: any}>(); 

and I'm setting the values on a change event with

this.selectedValue.emit({
  in: event.in,
  out: event.out
})

My question is. In another part of the app I need to just set the 'in' value and leave the 'out' value alone. Is this possible?

I couldn't find anything on a search and when I tried to omit the out in the emit it yelled at me.

Answer 1

Please write like this::

@Output() selectedValue = new EventEmitter<{ in: any; out?: any }>();