Unexpected results when filtering an array of objects in Angular using RxJS
I'm confused about I've spent hours debugging this and This might be a silly question, but I'm working on an Angular application (version 12) where I need to filter an array of objects based on user input... I'm using RxJS to handle the filtering process, but I'm encountering unexpected results. Specifically, when filtering an array of objects that contain a property called `status`, the output is not what I anticipated. Here's the relevant portion of my code: ```typescript import { Component } from '@angular/core'; import { BehaviorSubject } from 'rxjs'; interface Item { id: number; name: string; status: string; } @Component({ selector: 'app-item-list', templateUrl: './item-list.component.html', }) export class ItemListComponent { private itemsSubject = new BehaviorSubject<Item[]>([]); items$ = this.itemsSubject.asObservable(); constructor() { this.itemsSubject.next([ { id: 1, name: 'Item 1', status: 'active' }, { id: 2, name: 'Item 2', status: 'inactive' }, { id: 3, name: 'Item 3', status: 'active' } ]); } filterItems(status: string) { this.itemsSubject.next(this.itemsSubject.getValue().filter(item => item.status === status)); } } ``` The `filterItems` method is supposed to update the `itemsSubject` with only those items that match the specified status. However, when I call `filterItems('active')`, the resulting observable sometimes returns an empty array, even though I can see in the console that there are matching items before filtering. I've tried adding some debugging logs inside the `filterItems` method to check the current state of the array before and after the filter operation, but it seems to be working correctly. I also ensured that the `status` strings are exactly matching, including case sensitivity. Additionally, I noticed that if I call `filterItems` multiple times in quick succession, it behaves inconsistently, sometimes returning the expected results and other times not. Is there something I'm missing in terms of managing the state with RxJS? Could there be a race condition or some other issue arising from the way I'm using `BehaviorSubject`? Any insights would be appreciated! This is part of a larger service I'm building. Is there a better approach? Any advice would be much appreciated. I've been using Typescript for about a year now. I'd love to hear your thoughts on this. I'm developing on Windows 11 with Typescript. What's the correct way to implement this?