通过代码关闭v-data-table中展开的行

import { VDataTable } from 'vuetify/lib'

<template>
  <v-data-table
    :items="items"
    :expanded.sync="expanded"
    item-key="id"
    show-expand
    @click:row="toggleExpand"
  >
    <!-- 表格列定义 -->
  </v-data-table>
</template>

export default {
  data() {
    return {
      items: [
        // 数据项定义
      ],
      expanded: []
    }
  },
  methods: {
    toggleExpand(item) {
      const index = this.expanded.indexOf(item)
      if (index > -1) {
        this.expanded.splice(index, 1)
      } else {
        this.expanded.push(item)
      }
    }
  }
}