fix(components): [input] blur event fails when using textarea (#17836)

closed #17825

packages/components/input/__tests__/input.test.tsx

@@ -331,21 +331,67 @@ describe('Input.vue', () => {
     const handleFocus = vi.fn()
     const handleBlur = vi.fn()
 
-    test('event:focus & blur', async () => {
+    test('event:focus', async () => {
       const content = ref('')
       const wrapper = mount(() => (
         <Input
           placeholder="请输入内容"
           modelValue={content.value}
           onFocus={handleFocus}
-          onBlur={handleBlur}
         />
       ))
 
       const input = wrapper.find('input')
 
       await input.trigger('focus')
-      expect(handleFocus).toBeCalled()
+      expect(handleFocus).toHaveBeenCalledOnce()
+    })
+
+    test('event:blur', async () => {
+      const content = ref('')
+      const wrapper = mount(() => (
+        <Input
+          placeholder="请输入内容"
+          modelValue={content.value}
+          onBlur={handleBlur}
+        />
+      ))
+
+      const input = wrapper.find('input')
+
+      await input.trigger('blur')
+      expect(handleBlur).toHaveBeenCalledOnce()
+    })
+
+    test('textarea & event:focus', async () => {
+      const content = ref('')
+      const wrapper = mount(() => (
+        <Input
+          type="textarea"
+          placeholder="请输入内容"
+          modelValue={content.value}
+          onFocus={handleFocus}
+        />
+      ))
+
+      const input = wrapper.find('textarea')
+
+      await input.trigger('focus')
+      expect(handleFocus).toHaveBeenCalledOnce()
+    })
+
+    test('textarea & event:blur', async () => {
+      const content = ref('')
+      const wrapper = mount(() => (
+        <Input
+          type="textarea"
+          placeholder="请输入内容"
+          modelValue={content.value}
+          onBlur={handleBlur}
+        />
+      ))
+
+      const input = wrapper.find('textarea')
 
       await input.trigger('blur')
       expect(handleBlur).toBeCalled()

packages/components/input/src/input.vue

@@ -130,6 +130,8 @@
         @compositionupdate="handleCompositionUpdate"
         @compositionend="handleCompositionEnd"
         @input="handleInput"
+        @focus="handleFocus"
+        @blur="handleBlur"
         @change="handleChange"
         @keydown="handleKeydown"
       />
@@ -257,13 +259,17 @@ const textareaCalcStyle = shallowRef(props.inputStyle)
 
 const _ref = computed(() => input.value || textarea.value)
 
-const { wrapperRef, isFocused } = useFocusController(_ref, {
+// wrapperRef for type="text", handleFocus and handleBlur for type="textarea"
+const { wrapperRef, isFocused, handleFocus, handleBlur } = useFocusController(
+  _ref,
+  {
     afterBlur() {
       if (props.validateEvent) {
         elFormItem?.validate?.('blur').catch((err) => debugWarn(err))
       }
     },
-})
+  }
+)
 
 const needStatusIcon = computed(() => elForm?.statusIcon ?? false)
 const validateState = computed(() => elFormItem?.validateState || '')