From cfcdf3f9bf5ff69aa9c3b8908a5880478731a4eb Mon Sep 17 00:00:00 2001
From: loveverse <398096830@qq.com>
Date: Mon, 15 Jun 2026 11:00:42 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20Select=E4=BA=8C=E7=BA=A7=E8=81=94?=
 =?UTF-8?q?=E5=8A=A8=E6=B8=85=E7=A9=BA=E5=90=8E=E9=87=8D=E6=96=B0=E9=80=89?=
 =?UTF-8?q?=E6=8B=A9label=E6=9C=AA=E6=9B=B4=E6=96=B0?=
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在Select组件二级联动场景中，清空选择后再次选择时，二级选项的label仍显示上一次的值。
原因：optionLabel和filter方法中直接读取this.$el.textContent，DOM更新存在时序问题导致获取到旧值。
修复：新增searchLabel数据属性，在mounted/updated生命周期中同步更新，替代直接读取DOM文本。
---
 src/components/select/option.vue | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/components/select/option.vue b/src/components/select/option.vue
index e9d09046..46e351ab 100644
--- a/src/components/select/option.vue
+++ b/src/components/select/option.vue
@@ -67,7 +67,7 @@
                 return (this.label) ? this.label : this.value;
             },
             optionLabel(){
-                return this.label || (this.$el && this.$el.textContent);
+                return this.label || this.searchLabel;
             },
             isFocused(){
                 const SelectInstance = this.SelectInstance;
@@ -103,7 +103,7 @@
                 const filterByLabel = SelectInstance.filterByLabel;
                 const slotOptionsMap = SelectInstance.slotOptionsMap;
                 const { props } = slotOptionsMap.get(this.value) || { props: {} };
-                const label = this.label || this.$el && this.$el.textContent;
+                const label = this.label || this.searchLabel;
                 let filterOption = String(label ?? props.value ?? '').toLowerCase();
                 if (filterByLabel) {
                     filterOption = String(label != null ? label : '').toLowerCase();
@@ -168,13 +168,26 @@
         created(){
             this.instance = getCurrentInstance();
         },
+        updated () {
+            this.searchLabel = (this.$el && this.$el.textContent) || '';
+        },
         mounted () {
+            this.searchLabel = (this.$el && this.$el.textContent) || '';
             this.addOption();
             const Select = findComponentUpward(this, 'iSelect');
             if (Select) {
                 this.autoComplete = Select.autoComplete;
             }
         },
+        watch: {
+            value (newVal, oldVal) {
+                const select = this.SelectInstance;
+                if (select && newVal !== oldVal) {
+                    select.slotOptionsMap.has(oldVal) && select.slotOptionsMap.delete(oldVal);
+                    select.slotOptionsMap.set(newVal, this.instance);
+                }
+            }
+        },
         beforeUnmount () {
             // fix AutoComplete. when suggest the word, the dropdown will hide
             nextTick(() => {