JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.jeasyui.com/easyui/jquery.easyui.min.js"></script>
<link rel="stylesheet" href="http://www.jeasyui.com/easyui/themes/default/easyui.css">
<input id="dt" type="text" name="birthday">

JavaScript

var date = new Date();
date.setHours(12);
date.setMinutes(0);

function addZero(i) {
    if (i < 10) {
        i = "0" + i;
    }
    return i;
}


$('#dt').datetimebox({
    value: getDateForDateTimeBox(date),
    required: true
});

function getDateForDateTimeBox(datetime){
    return (datetime.getMonth() + 1) + "/" + datetime.getDate() + "/" + datetime.getFullYear() + " " + datetime.getHours() + ":" + datetime.getMinutes();
}