import { reactive,toRefs,computed,watch } from 'vue';
import { useStore } from 'vuex';
export default {
   setup(){
     //定义vuex方法
     const store = useStore();
     //初始化 相当于vue2的data
     const state = reactive({
         //使用计算属性动态拿到vuex的值
         radioVal: computed(() => {
               return store.state.headerObj.radioVal;
         }),
     })
     //watch监听动态拿到值的变化,从而做出反应
     watch(()=> state.radioVal,(newVal,oldVal)=>{
         console.log(newVal)
         console.log(oldVal)
     }
     //如果想监听多个值,在多写几个watch
     return{
        ...toRefs(state),
     }
   },
}