陶醉的松鼠 | 陶醉的松鼠

html

<el-tree 
  class="filter-tree"
  :data="treeData"
  :props="treeProps"
  node-key="id"
  :highlight-current="true"
  default-expand-all
  :filter-node-method="filterNode"
  ref="tree"
  @node-click="nodeClick">
</el-tree>
////是否高亮当前选中节点，默认值是 false。把它设置为true

javascript

commodityclasstwobyone(params).then((res) => {
 this.treeData = res.data
 if (res.data.length > 0) {
   this.$nextTick().then(() => {
     const firstNode = document.querySelector('.el-tree-node')
     firstNode.click();
   })
 }
})

4、通过 typescript 来设置高亮显示的节点：

javascript

this.$nextTick(() => {
       // selectId：绑定的 node-key
      this.$refs.tree.setCurrentKey(selectId);
});