Angular2服务主题订阅,保存最后值
我有样本服务主题:Angular2服务主题订阅,保存最后值,angular,angular2-services,angular2-observables,Angular,Angular2 Services,Angular2 Observables,我有样本服务主题: private categoryFilterTypeSource = new ReplaySubject<number>(); categoryFilterType$ = this.categoryFilterTypeSource.asObservable(); changeFilterType(newValue: number) { this.categoryFilterTypeSource.next(newValue);
private categoryFilterTypeSource = new ReplaySubject<number>();
categoryFilterType$ = this.categoryFilterTypeSource.asObservable();
changeFilterType(newValue: number) {
this.categoryFilterTypeSource.next(newValue);
}
private categoryFilterTypeSource=new ReplaySubject();
categoryFilterType$=this.categoryFilterTypeSource.asObservable();
changeFilterType(新值:编号){
this.categoryFilterTypeSource.next(newValue);
}
当我订阅此主题时,我想获取新订阅者的最后发送值。然后创建一个数组,并将最后一个值推送到该数组。当你需要的时候把它打开