vue-java-tutorials/vue3-tutorials/src/views/AboutView.vue

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<script setup lang="tsx">
import { ref } from 'vue';
defineProps({
peiqi: Number,
modelValue: Number,
timestamp: String,
});
const emit = defineEmits<{
(e: 'update:modelValue', value: number): void;
(e: 'update:peiqi123', value: number): void;
}>();
// 定义子组件的值,传给父组件
const childCount = ref(99);
// 定义子组件的值,传给父组件 --- 2
const childCount2 = ref(888);
/* 修改值 */
const onClick = () => {
childCount.value++;
childCount2.value++;
// 第一种,子传父
emit('update:modelValue', childCount.value);
// 第二种,子传父
emit('update:peiqi123', childCount2.value);
};
</script>
<template>
<div class="about">
<h1>子页面</h1>
<p>childCount{{ childCount }}</p>
<p>childCount2{{ childCount2 }}</p>
<p @click="onClick">时间戳{{ timestamp }}</p>
</div>
</template>
<style>
@media (min-width: 1024px) {
.about {
min-height: 50vh;
align-items: center;
}
}
h1 {
display: block;
width: 100%;
}
p {
font-weight: 800;
font-size: 24px;
color: purple;
}
</style>