Update core.ts

surveyjs · Sep 6, 2024 · 572829c · 572829c
1 parent 4a96d39
commit 572829c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/survey-core/src/dragdrop/core.ts b/packages/survey-core/src/dragdrop/core.ts
@@ -133,7 +133,7 @@ export abstract class DragDropCore<T> implements IDragDropEngine {
 
  let index = 0;
  let dragOverNode: HTMLElement = dragOverNodes[index];
- while (dragOverNode && dragOverNode.className && dragOverNode.className.indexOf("sv-drag-target-skipped") != -1) {
+ while (dragOverNode && dragOverNode.className && typeof dragOverNode.className.indexOf == "function" && dragOverNode.className.indexOf("sv-drag-target-skipped") != -1) {
  index++;
  dragOverNode = dragOverNodes[index];
  }