JSFiddle - React, Tailwind, and code Playground
HTML
<div id="picker"></div>
<br/><br/>
<button class="next-day">Next</button>
<button class="prev-day">Previous</button>
JavaScript
$('#picker').datepicker();
$('.next-day').on("click", function () {
var date = $('#picker').datepicker('getDate');
date.setTime(date.getTime() + (1000*60*60*24))
$('#picker').datepicker("setDate", date);
});
$('.prev-day').on("click", function () {
var date = $('#picker').datepicker('getDate');
date.setTime(date.getTime() - (1000*60*60*24))
$('#picker').datepicker("setDate", date);
});