SOURCE

new Vue({
    el: '#app',
    data:{
        isLoseWeight: undefined,
        loseWeightTime: undefined
    },
    methods:{
        showValue: function(){
            alert(this.isLoseWeight)
        },
        showValue2: function(){
            alert(this.loseWeightTime)
        },
    }
})

<div id="app">
  <div class="title">近期（1-3个月）体重是否下降</div>
  <ak-radio :param="[{text:'是',value:'0'},{text:'否',value:'1'}]"
    name="isLoseWeight" v-model="isLoseWeight"></ak-radio>
  <div><button v-on:click="showValue">查看选中值</button></div>

  <div class="title">体重下降时间</div>
  <ak-radio :param="[{text:'3个月内',value:'0'},{text:'2个月内',value:'1'},{text:'1个月内',value:'2'}]"
    name="loseWeightTime" v-model="loseWeightTime"></ak-radio>
  <div><button v-on:click="showValue2">查看选中值</button></div>

</div>

.title {
  color: #4A4A4A;
  line-height: 25px;
  font-weight: 600;
}
button {
  margin-top:20px;
}