vue 过滤懒加载使用elementUI实现树懒加载与节点过滤功能

vue 使用elementUI实现树懒加载功能以及节点过滤

1.过滤：设置filter-node-method，值为过滤函数。

2.懒加载：点击节点时才进行该层数据的获取

   <el-input placeholder="输入关键字进行过滤"
                    size="mini"
                    v-model="filterText">
          </el-input>
        </div>
        <el-tree :data="treeData"
                 :load="loadNode"
                 lazy
                 :props="defaultProps"
                 :check-on-click-node="true"
                 :accordion="true"
                 empty-text="组织机构"
                 icon-class=""
                 :filter-node-method="filterNode"
                 ref="tree"
                 :expand-on-click-node="false"
                 @node-click="handleNodeClick"></el-tree>

<script>
export default {
  data() {
    return {
      filterText: '', //关键字过滤
      props: {
        label: 'name',
        children: '',
        isLeaf: '',
      },
    }
  },
  watch: {
    filterText(val) {
      this.$refs.tree.filter(val)//监听v-model
    },
  },
  methods: {
      //过滤
    filterNode(value, data) {
      if (!value) return true
      return data.name.indexOf(value) !== -1 //过滤字段为树展示的label值
    },
     //懒加载
    loadNode(node, resolve) {
      if (node.level === 0) {
        //掉接口
        getGroupTree(0).then((res) => {
          const data = res.data.data
          return resolve(data)
        })
      }
      if (node.level > 1) return resolve([])
      setTimeout(() => {
       //掉接口
        getGroupTree(node.data.id).then((res) => {
          const data = res.data.data
          resolve(data)
        })
      }, 500)
    },
  },
}
</script>