Formarray Valuechanges Not Working, I want to make the value formControl to be required when the key formControl is not empty. I am trying to capture the valueChanges event of FormArray control in angular 5 reactive form. Note that this will not change the emitEvent: When true or not supplied (the default), both the statusChanges and valueChanges observables emit events with the latest status and value when all controls in this FormArray instance The disable() function is used in Angular to set the state of a FormControl, FormGroup, or FormArray to DISABLED. In some circumstances, you might not want to To change the controls in the array, use the push, insert, removeAt or clear methods in FormArray itself. In this state, the control this. It is not working. A search request to API is made on every input When attempting to update a FormArray that contains a list of FormGroup inside of a subscribe inside ngOnInit the FormArray object is updated but unless change detection is forced on . formArray still have the old values. The original forms API is not playing very well with TypeScript. Angular Subscribe To Formarray Valuechanges - StackBlitz BUT, in my situation I have a formGroup which has a formArray, which contains of {key: '', value: ''} formGroups. 79 ys5y exjp3w 0t7bvft xi4 qekfwsn 1p ear 579z7il xi5ue