feat: base scTable增加选择数量显示

src/components/scTable/index.vue

@@ -13,7 +13,7 @@
       <el-table v-bind="$attrs" :data="tableData" :row-key="rowKey" :key="toggleIndex" ref="scTable"
         :height="height == 'auto' ? null : '100%'" :size="config.size" :border="config.border" :stripe="config.stripe"
         :summary-method="remoteSummary ? remoteSummaryMethod : summaryMethod" @sort-change="sortChange"
-        @filter-change="filterChange">
+        @filter-change="filterChange" @selection-change="selectionChange">
         <slot></slot>
         <template v-for="(item, index) in userColumn" :key="index">
           <el-table-column v-if="!item.hide" :column-key="item.prop" :label="item.label" :prop="item.prop"
@@ -40,6 +40,7 @@
           @current-change="paginationChange" @update:page-size="pageSizeChange"></el-pagination>
       </div>
       <div class="scTable-do" v-if="!hideDo">
+        <span v-show="selectNum>0">已选择 <span style="font-weight: bold">{{selectNum}}</span> 项</span>
         <el-button v-if="!hideRefresh" @click="refresh" icon="el-icon-refresh" circle style="margin-left: 15px">
         </el-button>
         <el-button v-if="!hideRefresh" @click="reload" icon="el-icon-refresh-right" circle style="margin-left: 15px">
@@ -155,6 +156,7 @@ export default {
         border: true,
         stripe: this.stripe,
       },
+      selectNum: 0
     };
   },
   mounted() {
@@ -359,6 +361,10 @@ export default {
       }
       this.getData();
     },
+    // select事件
+    selectionChange(rows){
+      this.selectNum = rows.length;
+    },
     //本地过滤
     filterHandler(value, row, column) {
       const property = column.property;