Merge pull request Hacker0x01#5703 from qburst/issues/5571/handle-input-blur-event

🐛 Reset inputValue back to null on blur of input (even when the calendar popup is not open)

Author: martijnrusschen

src/index.tsx

@@ -553,11 +553,20 @@ export default class DatePicker extends Component<
     this.cancelFocusInput();
   };
 
+  resetInputValue = () => {
+    this.setState({
+      ...this.state,
+      inputValue: null,
+    });
+  };
+
   handleBlur = (event: React.FocusEvent<HTMLElement>) => {
     if (!this.state.open || this.props.withPortal || this.props.showTimeInput) {
       this.props.onBlur?.(event);
     }
 
+    this.resetInputValue();
+
     if (this.state.open && this.props.open === false) {
       this.setOpen(false);
     }

src/test/datepicker_test.test.tsx

@@ -4320,17 +4320,23 @@ describe("DatePicker", () => {
   });
 
   describe("input reset", () => {
-    const renderDatePickerInput = () => {
-      const WrapperComponent = () => {
+    const renderDatePickerInput = (open: boolean | null = null) => {
+      const WrapperComponent = ({ open }: { open: boolean | null }) => {
         const [date, setDate] = useState<Date | null>(new Date());
-        return <DatePicker open={false} selected={date} onChange={setDate} />;
+        return (
+          <DatePicker
+            {...(open !== null && { open })}
+            selected={date}
+            onChange={setDate}
+          />
+        );
       };
 
-      return render(<WrapperComponent />);
+      return render(<WrapperComponent open={open} />);
     };
 
     it("should reset the date input element with the previously entered value element on blur even when the calendar open is false", () => {
-      const { container } = renderDatePickerInput();
+      const { container } = renderDatePickerInput(false);
       const input = safeQuerySelector(container, "input") as HTMLInputElement;
 
       if (!input) {
@@ -4357,6 +4363,36 @@ describe("DatePicker", () => {
       fireEvent.blur(input);
       expect(input.value).toBe(DATE_VALUE);
     });
+
+    it("should reset the date input element with the previously entered value on blur even when the calendar is not open", () => {
+      const { container } = renderDatePickerInput();
+      const input = safeQuerySelector(container, "input") as HTMLInputElement;
+
+      fireEvent.click(input);
+
+      const VALID_DATE_VALUE = "06/23/2025";
+      fireEvent.change(input, {
+        target: {
+          value: VALID_DATE_VALUE,
+        },
+      });
+      fireEvent.blur(input);
+      expect(input.value).toBe(VALID_DATE_VALUE);
+
+      fireEvent.click(input);
+      fireEvent.keyDown(input, getKey(KeyType.Escape));
+      // Make sure the calendar is hidden
+      expect(container.querySelector(".react-datepicker")).toBeFalsy();
+
+      const INVALID_DATE_VALUE = "2025-02-45";
+      fireEvent.change(input, {
+        target: {
+          value: INVALID_DATE_VALUE,
+        },
+      });
+      fireEvent.blur(input);
+      expect(input.value).toBe(VALID_DATE_VALUE);
+    });
   });
 
   describe("Close on ESC Key", () => {