Question

这是我的详细课程：

export class Details {
  model = {
    "name":"",
    "city":"",
    "pin" : ""
  }
}

获取各种页面的实例：

import {Injectable} from '@angular/core';
import { BehaviorSubject } from 'rxjs';
import { Details } from './details';

@Injectable()
export class SharedDataService {

  constructor(){}

  object1 = new Details().model; //updates this data to object 2
  object2 = new Details().model; //it is not empty, updated with object 1

  sharedData = new BehaviorSubject( this.object1  );
  sharedObserver = this.sharedData.asObservable();

  sharedDataHello = new BehaviorSubject( this.object2  );
  sharedObserverHello = this.sharedData.asObservable();

  updateSharedData(object){
    this.sharedData.next(object);
  }

  updateSharedDataHello(object){
    this.sharedDataHello.next(object);
  }


}

在object2中-我正在寻找空对象。但是object1的值已分配给object2-如何防止这种情况？

Live demo-导航至hello页并查看控制台。

Answer 1

我更新了服务，如下所示：

import {Injectable} from '@angular/core';
import { BehaviorSubject } from 'rxjs';
import { Details } from './details';

@Injectable()
export class SharedDataService {

  object1 = new Details().model;
  object2 = new Details().model;

  constructor(){
    console.log( '1', this.object1);
    console.log( '2', this.object2);
  }

  sharedData = new BehaviorSubject( this.object1  );
  sharedObserver = this.sharedData.asObservable();

  sharedDataHello = new BehaviorSubject( this.object2  );
  sharedObserverHello = this.sharedDataHello.asObservable();

  updateSharedData(object){
    this.sharedData.next(object);
  }

  updateSharedDataHello(object){
    this.sharedDataHello.next(object);
  }

}

无法从“类”获取新的“实例”

1 个答案: