W3Schools Tryit 编辑器 - W3Schools 中文教程

<!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/3.4.1/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <h2>Button Methods</h2>
  <p>The <strong>string</strong> method changes the button text.</p>
  <p><strong>Note:</strong> You must add the <strong>data-STRING-text</strong> attribute with a value of the specified 
  button text, for this example to work.</p>
    <button type="button" class="btn btn-default" data-somestringvalue-text="Loading Finished" autocomplete="off">Example Button</button>
</div>

</body>
</html>