啥也不说，贴出代码，看执行顺序。
import { Component } from '@angular/core';import { HttpClient } from "@angular/common/http";@Component({selector: 'app-root',templateUrl: './ponent.html',styleUrls: ['./ponent.scss']})export class AppComponent {title = 'app';constructor(private client:HttpClient){this.initData().then(data => {console.log(data);console.log('constructor 执行完成')});}async initData(){let data = await this.getData();console.log(data);console.log('initData 执行完成');return data;}getData(){let url = '/hottopic/browse/topicList';let data = this.client.get(url).toPromise();console.log(data);console.log('getData 执行完成');return data;}}
