From 01305bde86e020a8fed628129b0ac29af97cebea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=8C=E8=B4=A7=E6=9C=BA=E5=99=A8=E4=BA=BA?=
 <smith3816@gmail.com>
Date: Fri, 13 Feb 2026 11:11:24 +0800
Subject: [PATCH] fix: handle number 0 as valid label in SingleContent

- Fix logic bug where number 0 was incorrectly excluded from has-value className
- Update condition to explicitly check null, undefined, and empty string
- Add test case for number 0 value display
---
 src/SelectInput/Content/SingleContent.tsx |  6 +++++-
 tests/Select.test.tsx                     | 10 ++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/SelectInput/Content/SingleContent.tsx b/src/SelectInput/Content/SingleContent.tsx
index 89e6b747..55008591 100644
--- a/src/SelectInput/Content/SingleContent.tsx
+++ b/src/SelectInput/Content/SingleContent.tsx
@@ -88,7 +88,11 @@ const SingleContent = React.forwardRef<HTMLInputElement, SharedContentProps>(
       <div
         className={clsx(
           `${prefixCls}-content`,
-          displayValue && displayValue.label && `${prefixCls}-content-has-value`,
+          displayValue &&
+            displayValue.label !== null &&
+            displayValue.label !== undefined &&
+            displayValue.label !== '' &&
+            `${prefixCls}-content-has-value`,
           mergedSearchValue && `${prefixCls}-content-has-search-value`,
           hasOptionStyle && `${prefixCls}-content-has-option-style`,
           classNames?.content,
diff --git a/tests/Select.test.tsx b/tests/Select.test.tsx
index d7eadca7..262273a2 100644
--- a/tests/Select.test.tsx
+++ b/tests/Select.test.tsx
@@ -282,6 +282,16 @@ describe('Select.Basic', () => {
     expect(container.querySelector('.rc-select-content-has-value')).toBeFalsy();
   });
 
+  it('should add -content-has-value className when value is number 0', () => {
+    const { container } = render(
+      <Select value={0}>
+        <Option value={0}>0</Option>
+        <Option value="1">1</Option>
+      </Select>,
+    );
+    expect(container.querySelector('.rc-select-content-has-value')).toBeTruthy();
+  });
+
   it('should default select the right option', () => {
     const { container } = render(
       <Select defaultValue="2">