绑定方法:
<radio-group bindchange="swiperChange">
</radio-group>
前端设置value值
<radio checked="true" value="1" name="A" />A</radio>
<radio checked="false" value="2" name="B" />B</radio>
后端获取value值
radioChange:function(e){
console.log(e.detail.value);
},