fix

components/vc-select/Select.vue

@@ -75,8 +75,10 @@ export default {
     // onInputKeydown: noop,
   },
   data () {
+    this.labelMap = new Map()
+    this.titleMap = new Map()
     let sValue = []
-    const { value, defaultValue, combobox, open, defaultOpen, $slots } = this
+    const { value, defaultValue, combobox, open, defaultOpen } = this
     if (hasProp(this, 'value')) {
       sValue = toArray(value)
     } else {
@@ -93,9 +95,7 @@ export default {
         }
       })
     }
-    this.labelMap = new Map()
+    this.initLabelAndTitleMap(sValue)
-    this.titleMap = new Map()
-    this.updateLabelAndTitleMap($slots.default)
     let inputValue = ''
     if (combobox) {
       inputValue = sValue.length
@@ -175,6 +175,24 @@ export default {
     }
   },
   methods: {
+    initLabelAndTitleMap (sValue) {
+      // 保留已选中的label and title
+      const labelArr = []
+      const titleArr = []
+      const values = sValue || this.sValue
+      values.forEach((val) => {
+        const key = val.key
+        let { label, title } = val
+        label = label === undefined ? this.labelMap.get(key) : label
+        title = title === undefined ? this.titleMap.get(key) : title
+        labelArr.push([key, label === undefined ? key : label])
+        titleArr.push([key, title])
+      })
+      this.labelMap = new Map(labelArr)
+      this.titleMap = new Map(titleArr)
+
+      this.updateLabelAndTitleMap(this.$slots.default)
+    },
     updateLabelAndTitleMap (children = []) {
       children.forEach(child => {
         if (!child) {
@@ -1431,17 +1449,7 @@ export default {
   },
 
   render () {
-    // 保留已选中的label and title
+    this.initLabelAndTitleMap()
-    const labelArr = []
-    const titleArr = []
-    this.sValue.forEach(({ key }) => {
-      labelArr.push([key, this.labelMap.get(key)])
-      titleArr.push([key, this.titleMap.get(key)])
-    })
-    this.labelMap = new Map(labelArr)
-    this.titleMap = new Map(titleArr)
-
-    this.updateLabelAndTitleMap(this.$slots.default)
     const props = this.$props
     const multiple = isMultipleOrTags(props)
     const preOptions = this._options || []

components/vc-select/demo/single.vue

@@ -6,7 +6,7 @@ export default {
   data () {
     return {
       destroy: false,
-      value: String(9),
+      value: 9,
     }
   },
   methods: {
@@ -71,7 +71,7 @@ export default {
           <Option value='21' disabled text='disabled'>disabled</Option>
           <Option value='31' text='yiminghe'>yiminghe</Option>
           {[0, 1, 2, 3, 4, 5, 6, 7, 8, 9].map((i) => {
-            return <Option key={String(i)} text={String(i)}>{i}</Option>
+            return <Option key={i} text={String(i)}>{i}</Option>
           })}
         </Select>
       </div>