<template><!-- 响应式数据变量是双项绑定 --><view>{{num}}</view><view>{{string}}</view><view>{{arry[2]}}</view><view>{{obj.name}}</view>
</template><script setup>// 使用ref定义响应式数据变量，必须导入refimport {ref} from "vue";let num = ref(5);setInterval(()=>{num.value++;}, 1000)let string = ref("Hello World");let arry = ref([1,2,3,4,5,6,7,8]);let obj = ref({name:"王五", age:18});
</script><style lang="scss"></style>