本章将讲解 Bootstrap 进度条。在本教程中,您将看到如何使用 Bootstrap 创建加载、重定向或动作状态的进度条。
Bootstrap 进度条使用 CSS3 过渡和动画来获得该效果。Internet Explorer 9 及之前的版本和旧版的 Firefox 不支持该特性,Opera 12 不支持动画。
创建一个基本的进度条的步骤如下:
让我们看看下面的实例:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 进度条</title> <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <script src="/scripts/jquery.min.js"></script> <script src="/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class="progress"> <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 40%;"> <span class="sr-only">40% 完成</span> </div> </div> </body> </html>
结果如下所示:
创建不同样式的进度条的步骤如下:
让我们看看下面的实例:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 交替的进度条</title> <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <script src="/scripts/jquery.min.js"></script> <script src="/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class="progress"> <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 90%;"> <span class="sr-only">90% 完成(成功)</span> </div> </div> <div class="progress"> <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 30%;"> <span class="sr-only">30% 完成(信息)</span> </div> </div> <div class="progress"> <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 20%;"> <span class="sr-only">20% 完成(警告)</span> </div> </div> <div class="progress"> <div class="progress-bar progress-bar-danger" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 10%;"> <span class="sr-only">10% 完成(危险)</span> </div> </div> </body> </html>
结果如下所示:
创建一个条纹的进度条的步骤如下:
让我们看看下面的实例:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 条纹的进度条</title> <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <script src="/scripts/jquery.min.js"></script> <script src="/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class="progress progress-striped"> <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 90%;"> <span class="sr-only">90% 完成(成功)</span> </div> </div> <div class="progress progress-striped"> <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 30%;"> <span class="sr-only">30% 完成(信息)</span> </div> </div> <div class="progress progress-striped"> <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 20%;"> <span class="sr-only">20% 完成(警告)</span> </div> </div> <div class="progress progress-striped"> <div class="progress-bar progress-bar-danger" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 10%;"> <span class="sr-only">10% 完成(危险)</span> </div> </div> </body> </html>
结果如下所示:
创建一个动画的进度条的步骤如下:
这将会使条纹具有从右向左的运动感。
让我们看看下面的实例:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 动画的进度条</title> <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <script src="/scripts/jquery.min.js"></script> <script src="/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class="progress progress-striped active"> <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 40%;"> <span class="sr-only">40% 完成</span> </div> </div> </body> </html>
结果如下所示:
您甚至可以堆叠多个进度条。把多个进度条放在相同的 .progress 中即可实现堆叠,如下面的实例所示:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 堆叠的进度条</title> <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <script src="/scripts/jquery.min.js"></script> <script src="/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class="progress"> <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 40%;"> <span class="sr-only">40% 完成</span> </div> <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 30%;"> <span class="sr-only">30% 完成(信息)</span> </div> <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 20%;"> <span class="sr-only">20% 完成(警告)</span> </div> </div> </body> </html>
结果如下所示: