JSFiddle - React, Tailwind, and code Playground

HTML

<div id="upvote" style="font-size:22px;">+</div>
<div id="vote" style="font-size:22px;">0</div>
<div id="downvote" style="font-size:22px;">-</div>

JavaScript

$(document).ready(function (){

    $('#upvote').click(function() {
        var VoteValue = $('#vote').text();
        $('#vote').text(parseInt(VoteValue)+1);

    });

$('#downvote').click(function() {
        var VoteValue1 = $('#vote').text();
        $('#vote').text(parseInt(VoteValue1)-1);

    });

});