父组件 ParentComponent.vue
<!-- ParentComponent.vue -->
<template>
<div>
子组件输入的数据
<p>Parent Value: {{ parentValue }}</p>
父输入框
<input v-model="parentValue">
<CustomInput v-model="parentValue" />
</div>
</template>
<script setup>
import CustomInput from './CustomInput.vue';
import { ref } from 'vue';
const parentValue = ref('');
</script>
子组件
<!-- CustomInput.vue -->
<template>
子组件
<input :value="modelValue" @input="updateValue($event.target.value)" />
</template>
<script setup>
import { ref, defineProps, defineEmits } from 'vue';
const props = defineProps({
modelValue: {
type: String,
required: true,
},
});
const emit = defineEmits();
const updateValue = (newValue) => {
emit('update:modelValue', newValue);
};
</script>
效果
标签:parentValue,vue,const,绑定,vue3,组件,import,ref From: https://www.cnblogs.com/lcaiqin/p/18285447