Question

我正在Angular 6上开发一个应用程序，并且在我的本地开发环境上运行良好，但是当我尝试使用ng build --prod 6应用程序构建Angular时，会抛出错误。

Home.Component.ts 从'@ angular / core'导入{Component，OnInit};

@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
  src: HTMLImageElement; 
  constructor() { }

  ngOnInit() {

  }

}

Home.component.html

<section class="featured-lis">
    <div class="container padding_zero">
        <div class="row">
            <div class="col-md-12">
                <div class="jumbotron custom_ads">
                    <img [src]="src/assets/images/ads/ad1.png" alt="">
                </div>
            </div>
        </div>
    </div>

</section>


    <div class="container">
        <div class="row">
            <div class="col-xs-12 col-md-6 col-lg-4">
                <div class="single-cta">
                    <div class="cta-icon">
                        <i class="lni-grid"></i>
                    </div>
                    <h4>Refreshing Design</h4>
                    <p>Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie</p>
                </div>
            </div>
            <div class="col-xs-12 col-md-6 col-lg-4">
                <div class="single-cta">
                    <div class="cta-icon">
                        <i class="lni-brush"></i>
                    </div>
                    <h4>Easy to Customize</h4>
                    <p>Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie</p>
                </div>
            </div>
            <div class="col-xs-12 col-md-6 col-lg-4">
                <div class="single-cta">
                    <div class="cta-icon">
                        <i class="lni-headphone-alt"></i>
                    </div>
                    <h4>24/7 Support</h4>
                    <p>Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie</p>
                </div>
            </div>
        </div>
    </div>
</section>
<app-footer></app-footer>

Answer 1

如果您尝试访问未正确声明的类的属性，则可能会发生此类错误。

例如，如果您有这样的组件（简化了语法）：

export class HomeComponent implements OnInit {
    constructor() {}

    ngOninit() {}
}

在您的component.html文件中，您尝试访问一些未声明的属性，例如：

<div>{{ads}}</div>

它不会让您正确构建项目。

要解决此问题，请声明您在组件类中使用的所有属性：

export class HomeComponent implements OnInit {
        ads: any;
        src: any;
        assets: any;  // and other....

        constructor() {}

        ngOninit() {}
        ... further code of your component
}

Answer 2

更改

<img [src]="src/assets/images/ads/ad1.png" alt="">

到

<img [src]="'src/assets/images/ads/ad1.png'" alt="">

甚至

<img src="src/assets/images/ads/ad1.png" alt="">

以及所有类似的问题。

为什么在用角度6构建项目时会引发错误？

2 个答案: