new317.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>bootstrap的使用</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
<script src="https://fastly.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js" integrity="sha384-nvAa0+6Qg9clwYCGGPpDQLVpLNn0fRaROjHqs13t4Ggj3Ez50XnGQqc/r8MhnRDZ" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></script>
</head>
<body>
<div class="container">
<br>
<button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="left" title="左侧的提示">按钮</button><br><br>
<button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="top" title="顶部的提示">按钮</button><br><br>
<button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="bottom" title="底部的提示">按钮</button><br><br>
<button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="right" title="右侧的提示">按钮</button><br><br>
</div>
<script type="text/javascript">
$(function() {
$("[data-toggle='tooltip']").tooltip();
});
</script>
</body>
</html>
