优化

src/views/technology/route/components/historyModal.vue

@@ -1,5 +1,5 @@
 <template>
-    <el-dialog title="历史版本" :visible.sync="visible" :before-close="handleClose" :close-on-click-modal="false"
+    <el-dialog title="历史版本" :visible.sync="visible" v-if="visible" :before-close="handleClose" :close-on-click-modal="false"
         :close-on-press-escape="false" append-to-body width="60%">
 
         <el-col :span="8">