摘要：
// show-checkbox 单选时去掉 <el-tree :props="props" :data="treeList" node-key="id" ref="tree" show-checkbox :expand-on-click-node="true" @node-click="handl 阅读全文
摘要：
let data = [ { firstLetter: 'A', fullName: '安徽省安庆市大观区', id: 1, childrens: [ { firstLetter: 'B', fullName: '安徽', id: 2, childrens: [ { firstLetter: 'D' 阅读全文