修复下拉选空白提示异常问题

src/components/dropdown-list-dynamic/dropdown-list-dynamic.vue

@@ -7,7 +7,7 @@
         :clearable="true"
         :filterable="filterable"
         @on-open-change="onClick"
-        :placeholder="$t('components.dropDownListDynamic.placeholder')">
+        :placeholder="placeholder?placeholder:$t('components.dropDownListDynamic.placeholder')">
         <i-option v-for="(item, index) in items" :key="index" :class="item.class" :value="item.value">{{($t('userCustom.'+tag+'.'+item.value)!== ('userCustom.'+tag+'.'+item.value))?$t('userCustom.'+tag+'.'+item.value) : item.text}}</i-option>
     </i-select>
 </template>

src/components/dropdown-list-mpicker/dropdown-list-mpicker.vue

@@ -11,7 +11,7 @@
             :clearable="true"
             :filterable="filterable"
             @on-open-change="onClick"
-            :placeholder="$t('components.dropDownListMpicker.placeholder')">
+            :placeholder="placeholder?placeholder:$t('components.dropDownListMpicker.placeholder')">
             <i-option v-for="(item, index) in items" :key="index" :class="item.class" :value="item.value.toString()" :label="item.text">
             <Checkbox :value = "(currentVal.indexOf(item.value.toString()))==-1?false:true">
                 {{Object.is(codelistType,'STATIC') ? $t('codelist.'+tag+'.'+item.value) : item.text}}

src/components/dropdown-list/dropdown-list.vue

@@ -8,7 +8,7 @@
         :clearable="true"
         :filterable="filterable"
         @on-open-change="onClick"
-        :placeholder="$t('components.dropDownList.placeholder')">
+        :placeholder="placeholder?placeholder:$t('components.dropDownList.placeholder')">
         <i-option v-for="(item, index) in items" :key="index" :class="item.class" :value="item.value">{{($t('codelist.'+tag+'.'+item.value)!== ('codelist.'+tag+'.'+item.value))?$t('codelist.'+tag+'.'+item.value) : item.text}}</i-option>
         </i-select>
         <ibiz-select-tree v-if="hasChildren" class="tree-dropdown-list" :disabled="disabled" :NodesData="items" v-model="currentVal" :multiple="false"></ibiz-select-tree>