element el-tree 自定义图标

除了自定义以外,下方代码还包含

1. tree自动展开
2. 点击节点后节点聚焦
3. 节点的click事件
4. 节点查询

<template>
 <el-input
          placeholder="请输入要查询的节点"
          v-model="filterText"
          clearable
        >
        </el-input>
        <el-tree
          highlight-current
          class="filter-tree"
          :data="treeData"
          :props="defaultProps"
          default-expand-all
          :filter-node-method="filterNode"
          :expand-on-click-node="false"
          ref="tree"
          @node-click="handleNodeClick"
          :render-content="renderContent"
        >
        </el-tree>
</template>
<script>
import {
export default {
  data() {
    return {
      filterText: "",
      treeData: [],
      defaultProps: {
        children: "children",
        label: "label",
      },
    };
  },
  watch: {
    filterText(val) {
      this.$refs.tree.filter(val);
    },
  },
  methods: {  
    filterNode(value, data) {
      if (!value) return true;
      return data.label.indexOf(value) !== -1;
    },
    handleNodeClick(data) {
      //点击节点事件
    },
    renderContent(h, { node, data }) {
      let icon;
      if (data.Usd1 == "Group") {
        icon = "fa fa-home";
      } else {
        icon = "fa fa-sitemap";
      }
      return h("span", [
        h("i", { class: icon, style: "font-size:small" }),
        " ",
        h("span", data.label),
      ]);
    },
  },
  created() {
  },
};
</script>
<style>
</style>