以这种方式订阅时:
getRecipes(): void {
this.recipeService.getRecipes().subscribe(recipes => this.recipes = recipes);
}
我打电话给' getRecipes();'在'ngOnInit()'中,我是否必须以某种方式取消订阅或者是否需要处理?我是否需要将OnDestroy函数添加到我的组件并取消在那里或?根据我的阅读,取消订阅非常重要
答案 0 :(得分:2)
试试这样:
import { Component, OnInit, OnDestroy } from '@angular/core';
import { Subscription } from 'rxjs/Rx';
export class Component implements OnInit, OnDestroy {
private subscription: Subscription;
ngOnInit() {
this.subscription = this.recipeService.getRecipes().subscribe(recipes => this.recipes = recipes);
}
ngOnDestroy() {
this.subscription.unsubscribe();
}
}