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Bootstrap Alert Tutorial


Alert refers to a state of being watchful.

Bootstrap provides the .alert class to provide an easy way to create predefined alert messages. The .alert class will be followed by one of the four contextual classes .alert-success, .alert-info, .alert-warning or .alert-danger.

Bootstrap Alert Example:

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Alerts 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://ajax.googleapis.com/ajax/libs/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">
  <h2>Bootstrap Alerts Example</h2>
  <div class="alert alert-success">
    <strong>Success!</strong> This alert box could indicate a successful or positive action.
  </div>
  <div class="alert alert-info">
    <strong>Info!</strong> This alert box could indicate a neutral informative change or action.
  </div>
  <div class="alert alert-warning">
    <strong>Warning!</strong> This alert box could indicate a warning that might need attention.
  </div>
  <div class="alert alert-danger">
    <strong>Danger!</strong> This alert box could indicate a dangerous or potentially negative action.
  </div>
</div>
 
</body>
</html>
Try it:

Bootstrap Alerts Example on jsbin.com

Bootstrap 3 Tutorial

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