angular 全局监听变量

store.js

import {Injectable, Input} from '@angular/core';
import { BehaviorSubject } from 'rxjs';



@Injectable({
  providedIn: 'root'
})
export class Store {
  // 游戏大种类id
  public game_type: BehaviorSubject<any[]> = new BehaviorSubject([]);

  constructor(
  ) {
  }
}

别的文件，修改变量的地方 this.store.game_type.next(data['game_type']);

监听变量更改的地方

public sub_game_type:Subscription;

this.sub_game_type = this.store.game_type.subscribe(data => {
   if(data) {
   }
 })

取消监听 ngOnDestroy() { this.sub_game_type.unsubscribe(); }