vue3+Element Plus v-model实现父子组件数据同步的案例代码

<template>
  <div>
    <el-card class="father">
      <el-button type="primary" @click="clickHandler">查看</el-button>
      <el-dialog
        v-model="dialogVisible"
        title="修改数据"
        width="50%"
        align-center
        @close="cancel"
      >
        <Child v-model="data"></Child>
        <template #footer>
          <span class="dialog-footer">
            <el-button @click="dialogVisible = false">取消</el-button>
            <el-button type="primary" @click="save"> 确定 </el-button>
          </span>
        </template>
      </el-dialog>
    </el-card>
  </div>
</template>
<script setup lang="ts">
import { cloneDeep } from "lodash";
import { ref } from "vue";
import Child from "./components/Child";
import type { AnyObject } from "./data.ts";
const dialogVisible = ref(false);
const data = ref<AnyObject[]>([
  {
    id: "1001",
    role: "明兰",
    video: "知否",
    score: 10,
  },
  {
    id: "1002",
    role: "薛杉杉",
    video: "杉杉来吃",
    score: 9,
  },
]);
const originData = ref<AnyObject[]>([]);
const clickHandler = () => {
  dialogVisible.value = true;
  originData.value = cloneDeep(data.value); // 需要深拷贝一份，确保数据独立
};
const cancel = () => {
  dialogVisible.value = false;
  data.value = originData.value; // 点击取消，使用原数据
};
const save = () => {
  dialogVisible.value = false;
  originData.value = data.value; // 点击保存，将最新数据保存一份
};
</script>
<style scoped lang="scss">
.father {
  height: 90vh;
}
</style>

<template>
  <div class="son">
    <el-table :data="data" :style="{ width: '100%' }" border>
      <el-table-column prop="role" label="角色" />
      <el-table-column prop="video" label="剧名">
        <template #default="{ row }">
          <el-input v-model="row.video" placeholder="请输入剧名" />
        </template>
      </el-table-column>
      <el-table-column prop="score" label="评分">
        <template #default="{ row }">
          <el-input v-model="row.score" placeholder="请输入评分" />
        </template>
      </el-table-column>
    </el-table>
  </div>
</template>
<script setup lang="ts">
import { computed } from "vue";
import type { AnyObject } from "../../data.ts";
const props = defineProps<{
  modelValue: AnyObject;
}>();
const emits = defineEmits<{
  (e: "update:modelValue", data: AnyObject): void;
}>();
// 用计算属性的get和set接收，可以避免修改props引起的违反单向数据流警告
const data = computed({
  get() {
    return props.modelValue;
  },
  set(value) {
    emits("update:modelValue", value);
  },
});
</script>
<style scoped>
</style>

export interface AnyObject {
  id: string;
  role: string;
  video: string;
  score: number;
}