优化

src/app/views/disinfection-supply/disinfection-supply.component.ts

@@ -39,7 +39,7 @@ export class DisinfectionSupplyComponent implements OnInit, OnDestroy {
   ngOnDestroy(){
     clearTimeout(this.timer);
     clearTimeout(this.resizeTimer);
-    this.mySwiper.destroy();
+    this.mySwiper && this.mySwiper.destroy();
     window.onresize = null;
   }