过滤树状图

src/views/realTimeMonitor/index.vue

@@ -4,7 +4,11 @@
       <!-- 左侧数据列表树 -->
       <div class="sideBar">
         <div class="searchBar">
-          <el-input placeholder="输入关键字进行过滤" v-model="filterText">
+          <el-input
+            placeholder="输入关键字进行过滤"
+            v-model="filterText"
+            prefix-icon="el-icon-search"
+          >
           </el-input>
         </div>
         <el-tree