elementui- how to obtain the checkboxes of the label and value at the same time

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <!-- import CSS -->
  <link rel="stylesheet" href="https://unpkg.com/[email protected]/lib/theme-chalk/index.css">
</head>
<body>
  <div id="app">
      <el-select v-model="opvalue" placeholder="请选择">   
        <// Here v-model value is a value obtained byel-option
          v-for="item in options"
             :key="item.value"
          :label="item.label"
          :value="item.value">
        </el-option>
      </el-select>
      <el-button type="success" @click="getdata">提交</el-button>
   </div>
</body>

  <!-- import Vue before Element -->
  <script src="https://unpkg.com/vue/dist/vue.js"></script>
  <!-- import JavaScript -->
  <script src="https://unpkg.com/[email protected]/lib/index.js"></script>
  <script src="https://unpkg.com/axios/dist/axios.min.js"></script>


  <script>
    new Vue({
      on: ' #app ' ,
        data() {
          return {
             options: [{
                      value: '1',
                      label: ' gold cake '
                    }, {
                      value: '2',
                      label: ' Pinai '
                    }, {
                      value: '3',
                      label: ' omelets '
                    }, {
                      value: '4',
                      label: ' Longxumian '
                    }, {
                      value: '5',
                      label: ' Beijing Duck '
                    }],
              opvalue: '' ,
              mylabel:'',
          };
        },

      methods: {        
        getdata(){
             //获取label值 
            for(let key in this.options){
                if( this.options[key].value==this.opvalue){
                    this.mylabel=this.options[key].label
                }
            }
            let params={
                value:this.opvalue,
                label:this.mylabel
            };
            
            console.log(params)
        }
      },
      
     
      created(){
         // axios.get("./data/a.json").then(res=>{
            //  console.log(res.data[0])
            //  this.opvalue=res.data[0].label;
         // }).catch(err=>{
            //  console.log(err);
         // }) 
      }
    })
  </script>
</html>

// Get the value of the checkbox in the v-model, the transfer value is the value to the value of the background.
// how to obtain the label and value at the same time it?
// how a method, there is a for loop, for loop have break, it will not jump out of the for loop, but also out of this method

elementui- how to obtain the checkboxes of the label and value at the same time

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