<template>
  <v-app>
    <v-container>
      <v-btn @click="multiSort = !multiSort">toggle multi-sort</v-btn>
      <v-data-table :items="items" :headers="headers" :multi-sort="multiSort" mobile></v-data-table>
    </v-container>
  </v-app>
</template>

<script>
  export default {
    data(){
      return {
        items: [{a:1, b:4, c: 5}, {a:2, b:3, c:6}],
        headers: [{key: "a", title: "Col A"}, {key: "b", title: "Col B"}, {key: "c", title: "Col C"}],
        multiSort: false
      }
    }
  }
</script>