vue实现全选全不选（基于elementui）

elementui是有checkbox组件，不过问题在于checkbox组件内只能嵌套简单的字符串，如果要嵌入标签怎么办?
首先渲染页面：

<el-checkbox v-model="checkAll" @change="handleCheckAllChange">全选el-checkbox>
<tbody v-for="item in orderData">
  <tr>
    <td class="order-num" colspan="7">
      <el-checkbox v-model="item.checkModel" @change="handleCheckItemChange" style="vertical-align:top;margin-top:20px;">el-checkbox>
      <div class="num">
        <a href="javascript:;">订单号：{{item.orderNumber}}a>
        <p>商户单号：{{item.shopNumber}}p>
      div>
    td>
    <td class="order-action" colspan="2">
      <a href="javascript:;">查看详情a>-<a href="javascript:;">备注a>-<a href="javascript:;">加星a>
    td>
  tr>
  <tr>
    <td>
      <div class="pic">
        <img :src=item.orderPic alt="">
      div>
      <div class="info">
        <a href="javascript:;">{{item.name}}a>
        <p>{{item.size}}p>
        <p>商品来源：{{item.from}}p>
      div>
    td>
    <td>{{item.number}}td>
    <td>{{item.price}}td>
    <td>-td>
    <td>{{item.company}}td>
    <td>
      <p>{{item.address}}p>
      <p>({{item.phone}})p>
    td>
    <td>{{item.date}}<br />{{item.time}}td>
    <td>{{item.state}}td>
    <td>{{item.pay}}<br /><span v-if="item.postCost">(运费：{{item.postCost}})span>td>
  tr>
tbody>

初始化data数据：

checkAll:false,
checkedAllShops:[],
checkItemData:[],
orderData:[
  {
    checkModel:false,
    orderNumber:'2017081618322542542',
    shopNumber:'2017081618322542542',
    orderPic:'../../../../static/images/realtimeprofile01.png',
    name:'【商城】贴轻松穴位艾灸贴',
    size:'5贴*盒',
    from:'本店商品',
    number:'10',
    price:'200.00',
    company:'蒂花之秀',
    address:'童话镇',
    phone:'12345678910',
    date:'2018-1-12',
    time:'09:30:00',
    state:'订单关闭',
    pay:'400.00',
    postCost:'10'
  },{
    checkModel:false,
    orderNumber:'2017081618322542542',
    shopNumber:'2017081618322542542',
    orderPic:'../../../../static/images/realtimeprofile01.png',
    name:'【商城】贴轻松穴位艾灸贴',
    size:'5贴*盒',
    from:'本店商品',
    number:'10',
    price:'200.00',
    company:'蒂花之秀',
    address:'童话镇',
    phone:'12345678910',
    date:'2018-1-12',
    time:'09:30:00',
    state:'订单关闭',
    pay:'400.00',
    postCost:'10.00'
  }
]

相关方法：

handleCheckAllChange(val){
  this.orderData.map((item,i)=>{
    item.checkModel = val;
  })
},
handleCheckItemChange(val){
  for(let i = 0,l = this.orderData.length;i < l;i ++){
    if(this.orderData[i].checkModel !== val){
      this.checkAll = false;
      return;
    }
  }
  this.checkAll = val;
}

css代码就不贴出来了，不好看，哈哈