<template>
<input type="text" v-model="message">
</template>
<script setup lang="ts">
import {ref, watch} from "vue";
let message = ref<string>("小满")
watch(message, (newVal, oldVal) => {
console.log(newVal, oldVal)
})
</script>
vue3 watch监听单个数据变化
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转载自blog.csdn.net/mp624183768/article/details/128739403
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