Bootstrap .tooltip(options)方法
使用Bootstrap中的tooltip（“选项”）方法来激活工具提示。
将光标停留在下面的按钮上，工具提示可见-
<button class="btn btn-default btn-lg"> Keep cursor </button>
以下是使用tooltip(options)类生成工具提示的脚本-
$(document).ready(function(){
$('.btn-default').tooltip({title: "demo", placement: "top"});
});您可以尝试运行以下代码来实现tooltip（“options”）方法-
示例
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h3>Example</h3>
<p>Tootltip will be visible after you mouse hover the below button:</p>
<div>
<button class="btn btn-default btn-lg">Keep cursor</button>
</div>
</div>
<script>
$(document).ready(function(){
$('.btn-default').tooltip({title: "demo", placement: "top"});
});
</script>
</body>
</html>