Here have you a data table example with the button:
<div id="app">
<v-app id="inspire">
<v-data-table
:headers="headers"
:items="configs"
:items-per-page="5"
class="elevation-1"
>
<template v-slot:footer.page-text>
<v-btn
color="primary"
dark
class="ma-2"
@click="buttonCallback">
Button
</v-btn>
</template>
</v-data-table>
</v-app>
</div>
https://codepen.io/jairoerazo/pen/wvzYBVW
You can delete the configs array items and the button is rendered.
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