el-checkbox-group点击一个checkbox全选，绑定的值也是数组，这是啥问题

Question

{{item.moduleName}}{{i.authName}}{{i.id}}确定data(){return{tableData:{},data:"",isVisible:false,dialogVisible:false,istrue:true,id:"",//全局idcurrentSelected:"",showModules:[],//获取模块dd:[],ruleForm:{roleName:"",sortNo:"",enabled:"",remark:""},};},letrid=this.id;this.$axios.get("/s/sys/sysModule/roleAuths?rid="+rid,this.authForm).then(res=>{if(res.success){//获取模块；this.showModules=res.result.tree;this.$message.success("授权列表获取成功");}else{this.$message.error("授权列表获取失败");}});上述的代码里面的el-checkbox-group绑定了dddata里面定义了是数组但是点击一个全都选中