转自：http://www.pianshen.com/article/3665136583/
<template> <div> <el-tree :props="defaultProps" :load="loadNode" lazy ref="tree" show-checkbox node-key="comcode" // 看项目和数据而定，有的为id :check-strictly="true" @check-change="handleClick" @node-click="nodeClick" > </el-tree> </div> </template> <script> methods:{ handleClick(data, checked, node){ if(checked == true){ this.checkedId = data.comcode; this.$refs.tree.setCheckedNodes([data]); } }, nodeClick(data,checked,node){ this.checkedId = data.comcode this.$refs.tree.setCheckedNodes([data]); } } </script>