CDN地址

https://www.bootcdn.cn/gijgo/
官方效果演示：
https://gijgo.com/datetimepicker

注意：
如果是下载到本地的话，需要一并下载两个文件，
一个是gijgo-material.ttf ，一个是：gijgo-material.woff
从这里下载：
https://cdnjs.com/libraries/gijgo

效果：

点击(此处)折叠或打开

<!doctype html>
<html lang="en">
<head>
<title>Title</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-12">
<div class="card">
<div class="card-body">
<h4 class="card-title">日期选择演示</h4>
<p class="card-text">请选择日期</p>
<input id="datepicker" class="col-12">
</div>
</div>
</div>
</div>
</div>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/popper.js/1.15.0/esm/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script src="https://cdn.bootcss.com/gijgo/1.9.13/combined/js/gijgo.min.js"></script>
<script src="https://cdn.bootcss.com/gijgo/1.9.13/combined/js/messages/messages.zh-cn.min.js"></script>
<script>
$("#datepicker").datepicker({
locale: 'zh-cn',
weekStartDay: 1,
format: 'yyyy-mm-dd hh:mm:ss',
footer: true,
modal: true
});
</script>
</body>
</html>

bootstrap4的日期插件--gijgo