How to display empty ng2-pdfjs-viewer when no file provided
问题 I'm using ng2-pdfjs-viewer to display pdfs in my angular page: <ng2-pdfjs-viewer [pdfSrc]="src"> </ng2-pdfjs-viewer> Behavior : i get src from server, when it's not empty or null it's working correctly, but when null or emty ng2-pdfjs-viewer crashes. Expeced : display an empty ng2-pdfjs-viewer when src is null or empty (or a loading indicator inside) 回答1: Put *ngIf with this component. It will solve null or empty src case. <ng2-pdfjs-viewer *ngIf="src" [pdfSrc]="src"> </ng2-pdfjs-viewer> 来源: