How to watch all FormControls ValueChanges except specific control?

Question

I have a form that do a computation whenever a control input value changes.

Here is my form_group looks like:

form_group = this.fb.group         


        

Answer 1

You just need to access to the control and subscribe to value changes property like this

    this.form_group.get('control1').valueChanges.subscribe(value => {
        console.log(value)
    })