React useDropZone Hook: Build a File Drop Zone (2026) Drag a file over a drop zone that has any child element inside it — an icon, a label, a preview thumbnail — and a hand-rolled isOver toggle starts flickering: true , false , true , false , as the cursor crosses from the container onto the chil...
Source: [Dev.to](https://dev.to/childrentime/react-usedropzone-hook-build-a-file-drop-zone-2026-5chi)