Question

    <!--app component.html-->
    <div class="position-relative container">
      <div class="row justify-content-center">
        <div class="card mt-sm-3 col-md-8">
          <div class="card-body">
            <h3 class="mb-0">Artist Directory</h3>
            <div class="form-group">
              <div class="form-label"><strong>For:</strong>
                {{ query }}
              </div>
              <input class="form-control mt-2" type="text">
            </div><!-- form-group -->
          </div><!-- card-body -->
        </div><!-- card -->
      </div><!-- row -->
      <div class="position-absolute container" style="left: 0; z-index:10">
        <div class="row justify-content-center">
          <div class="col-sm-10 col-md-8 col-lg-6 col-xl-5">
            <div class="list-group">
              <a href="#" class="list-group-item list-group-item-action flex-column align-items-start"
                *ngFor="let artist of artists">
                  <div class="media">
                    <div class="media-body align-self-center">
                      <h5 class="m-0">{{ artist.name }}</h5>
                      {{ artist.reknown }}
                    </div><!-- media body -->
                  </div><!-- media -->
              </a><!-- link -->
            </div><!-- list-group -->
          </div><!-- col -->
        </div><!-- row -->
      </div><!-- container -->
    
    </div><!-- position -->

// app component.ts
import { Component } from '@angular/core'

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styles: [
    `
      .list-group-item:first-child {
        border-top-left-radius: 0;
        border-top-right-radius: 0;
        border-top: 0;
      }
    `,
  ],
})
export class AppComponent {
  query: string
  artists: object
  constructor() {
    this.query = 'Barot'
    this.artists = [
      {
        name: 'Barot Bellingham',
        shortname: 'Barot_Bellingham',
        reknown: 'Royal Academy of Painting and Sculpture',
        bio: 'Barot has just finished his final year at The Royal Academy of Painting and Sculpture, where he excelled in glass etching paintings and portraiture. Hailed as one of the most diverse artists of his generation, Barot is equally as skilled with watercolors as he is with oils, and is just as well-balanced in different subject areas. Barot\'s collection entitled "The Un-Collection" will adorn the walls of Gilbert Hall, depicting his range of skills and sensibilities - all of them, uniquely Barot, yet undeniably different',
      },
      {
        name: 'Jonathan G. Ferrar II',
        shortname: 'Jonathan_Ferrar',
        reknown: 'Artist to Watch in 2012',
        bio: 'The Artist to Watch in 2012 by the London Review, Johnathan has already sold one of the highest priced-commissions paid to an art student, ever on record. The piece, entitled Gratitude Resort, a work in oil and mixed media, was sold for $750,000 and Jonathan donated all the proceeds to Art for Peace, an organization that provides college art scholarships for creative children in developing nations',
      },
    ]
  }
}

我正在尝试运行上面的代码但出现错误

错误：src/app/app.component.html:20:32 - 错误 TS2322：类型“对象”不可分配给类型“NgIterable |空|未定义'。

20 *ngFor="让艺术家的艺术家"> ~~

src/app/app.component.ts:5:15 5 templateUrl:'./app.component.html', ~~~~~~~~~~~~~~~~~~~~~~~~~ 组件AppComponent的模板出错。

Answer 1

artists:object 不是对象类型，而是数组类型

请添加这个

artists: any[]

或者考虑为您的结构创建一个类型。

export interface Artist {
  name: string
  shortname: string
  reknown: string
  bio: string
}

export class AppComponent {
  query:string;
  artists: Artist[];
  // ...
}

类型 'object' 不可分配给类型 'NgIterable<any> |空|不明确的'

1 个答案: