Angular http response.length返回未定义

import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';

constructor(private http: HttpClient) {}

getData(): Observable<any> {
  return this.http.get<any[]>('your-api-endpoint');
}

ngOnInit() {
  this.getData().subscribe(data => {
    if (Array.isArray(data)) {
      console.log(data.length); // 现在应该有定义
    } else {
      console.log('Data is not an array');
    }
  });
}

this.http.get<any[]>('your-api-endpoint').subscribe((data: any[]) => {
  console.log(data.length); // 现在应该有定义
});

this.http.get('your-api-endpoint').subscribe(response => {
  console.log(response); // 查看整个响应结构
  if (response && typeof response === 'object' && 'data' in response) {
    console.log(response.data.length); // 假设数据在response.data中
  }
});

this.http.get<any[]>('your-api-endpoint').subscribe(
  data => {
    console.log(data.length);
  },
  error => {
    console.error('There was an error!', error);
  }
);