headers-multiple.vue

<template>
  <v-data-table
    :headers="headers"
    :items="desserts"
    class="elevation-1"
    item-key="name"
    items-per-page="5"
  ></v-data-table>
</template>

<script>
  export default {
    data: () => ({
      desserts: [
        {
          name: 'Frozen Yogurt',
          calories: 159,
          fat: 6.0,
          carbs: 24,
          protein: 4.0,
          iron: 1,
        },
        {
          name: 'Ice cream sandwich',
          calories: 237,
          fat: 9.0,
          carbs: 37,
          protein: 4.3,
          iron: 1,
        },
        {
          name: 'Eclair',
          calories: 262,
          fat: 16.0,
          carbs: 23,
          protein: 6.0,
          iron: 7,
        },
        {
          name: 'Cupcake',
          calories: 305,
          fat: 3.7,
          carbs: 67,
          protein: 4.3,
          iron: 8,
        },
        {
          name: 'Gingerbread',
          calories: 356,
          fat: 16.0,
          carbs: 49,
          protein: 3.9,
          iron: 16,
        },
        {
          name: 'Jelly bean',
          calories: 375,
          fat: 0.0,
          carbs: 94,
          protein: 0.0,
          iron: 0,
        },
        {
          name: 'Lollipop',
          calories: 392,
          fat: 0.2,
          carbs: 98,
          protein: 0,
          iron: 2,
        },
        {
          name: 'Honeycomb',
          calories: 408,
          fat: 3.2,
          carbs: 87,
          protein: 6.5,
          iron: 45,
        },
        {
          name: 'Donut',
          calories: 452,
          fat: 25.0,
          carbs: 51,
          protein: 4.9,
          iron: 22,
        },
        {
          name: 'KitKat',
          calories: 518,
          fat: 26.0,
          carbs: 65,
          protein: 7,
          iron: 6,
        },
      ],
      headers: [
        [
          {
            title: 'Dessert (100g serving)',
            align: 'start',
            sortable: false,
            key: 'name',
            rowspan: 2,
          },
          {
            title: 'Properties',
            key: 'foo',
            colspan: 5,
          },
        ],
        [
          { title: 'Calories', align: 'end', key: 'calories' },
          { title: 'Fat (g)', align: 'end', key: 'fat' },
          { title: 'Carbs (g)', align: 'end', key: 'carbs' },
          { title: 'Protein (g)', align: 'end', key: 'protein' },
          { title: 'Iron (%)', align: 'end', key: 'iron' },
        ],
      ],
    }),
  }
</script>