outputs标签存档订阅

EventEmitters used for @Output‘s are just Observables with an emit method.

This means that you can just use Observable instance instead, e.g. we can wire up FormControl value changes directly:

readonly checkbox = new FormControl();
@Output() readonly change = this.checkbox.valueChanges;

继续阅读 30秒学会 Angular 片段 – Observables as outputs