浅谈vue 多个变量同时赋相同值互相影响

<el-tabs tab-position="left" style="max-height:280px;">
  <el-tab-pane v-for="(itema,index) in billItemLIsts" :key="itema.id" :label="itema.title" :value="itema.id">
  <ul class="bill_set_ul">
  <li v-for="(subitem,subindex) in itema.item" :key="subitem.id" :label="subitem.title" :value="subitem.id">
  <div class="el-form-item__label">{{subitem.title}}:</div>
  <div class="el-form-item__content" style="width:200px;margin-left: 100px;">
   <el-radio-group v-model="subitem.state_pj" @change="changeSub(index,subindex)">
   <el-radio :label="chargeIs">计费</el-radio>
   <el-radio :label="chargeNo">不计费</el-radio>
   </el-radio-group>
  </div>
  </li>
  </ul>
  </el-tab-pane>
 </el-tabs>

//最终的收费设置数据
billItemLIsts: [], 
 //最终原始的收费设置数据
billItemLIstsOriginal: [],

// 取消修改收费设置
cancleChargeSet() {
 this.billItemLIsts = this.billItemLIstsOriginal; 
 if(!this.chargeOpenIs){
 this.chargingFunIs = 1;
 }
  
},

//lib.js 文件
let bar = "stringBar";
let foo = "stringFoo";

let fn0 = function() {
 console.log("fn0");
};
let fn1 = function() {
 console.log("fn1");
};
export{ bar , foo, fn0, fn1}

//main.js文件
import {bar,foo, fn0, fn1} from "./lib";
console.log(bar+"_"+foo);
fn0();
fn1();