angular upload image with preview code example

Example 1: angular image upload

<label class="image-upload-container btn btn-bwm">
  <span>Select Image</span>
  <input #imageInput
         type="file"
         accept="image/*"
         (change)="processFile(imageInput)">
</label>

Example 2: angular image upload

class ImageSnippet {
  constructor(public src: string, public file: File) {}
}

@Component({
  selector: 'bwm-image-upload',
  templateUrl: 'image-upload.component.html',
  styleUrls: ['image-upload.component.scss']
})
export class ImageUploadComponent {

  selectedFile: ImageSnippet;

  constructor(private imageService: ImageService){}

  processFile(imageInput: any) {
    const file: File = imageInput.files[0];
    const reader = new FileReader();

    reader.addEventListener('load', (event: any) => {

      this.selectedFile = new ImageSnippet(event.target.result, file);

      this.imageService.uploadImage(this.selectedFile.file).subscribe(
        (res) => {
        
        },
        (err) => {
        
        })
    });

    reader.readAsDataURL(file);
  }
}