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A barra de progresso pode ser usada para exibir o progresso de uma tarefa ou operação para o usuário. O exemplo a seguir mostrará como criar uma barra de progresso simples com gradientes verticais.
A barra de progresso pode mostrar o processo de conclusão da tarefa do usuário.
Os passos para criar uma barra de progresso básica são os seguintes:
Adicione um atributo .progress classe
Em seguida, dentro do <div> acima, adicione um <div> com a classe .progress-bar um <div> vazio.
Adicione um atributo style com a largura em porcentagem, por exemplo, style="width:70%" indica que a barra de progresso está 70% da posição.
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>Barra de progresso básica</h2> <p>Para criar uma barra de progresso padrão, adicione a classe "progress" ao elemento de contêiner e a classe "progress" ao elemento filho-Classe "bar" e configure o progresso da barra de progresso: :</p> <div class="progress"> <div class="progress-bar" style="width:70%"></div> </div> </div> </body> </html>Teste e Veja ‹/›
进度条高度默认为 16px。我们可以使用 CSS 的 height 属性来修改他:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>进度条高度</h2> <p>进度条高度默认为 16px。我们可以使用 CSS 的 height 属性来修改他:</p> <div class="progress" style="height:10px;"> <div class="progress-bar" style="width:40%;"></div> </div> <br> <div class="progress" style="height:20px;"> <div class="progress-bar" style="width:50%;"></div> </div> <br> <div class="progress" style="height:30px;"> <div class="progress-bar" style="width:60%;"></div> </div> </div> </body> </html>Teste e Veja ‹/›
可以在进度条内添加文本,如进度的百分比:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>进度条文本标签</h2> <div class="progress"> <div class="progress-bar" style="width:70%">70%</div> </div> </div> </body> </html>Teste e Veja ‹/›
默认情况下进度条为蓝色,Bootstrap4 还提供了以下颜色的进度条:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>多种颜色的进度条</h2> <p>Bootstrap4 提供了以下几种进度条颜色:</p> <div class="progress"> <div class="progress-bar" style="width:30%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-success" style="width:40%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-info" style="width:50%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-warning" style="width:60%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-danger" style="width:70%"></div> </div> </div> </body> </html>Teste e Veja ‹/›
可以使用 .progress-bar-striped 类来设置条纹进度条:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>条纹的进度条</h2> <p>可以使用 .progress-bar-striped 类来设置条纹进度条:</p> <div class="progress"> <div class="progress-bar progress-bar-striped" style="width:30%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-success progress-bar-striped" style="width:40%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-info progress-bar-striped" style="width:50%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-warning progress-bar-striped" style="width:60%"></div> </div> <br> <div class="progress"> <div class="progress-bar bg-danger progress-bar-striped" style="width:70%"></div> </div> </div> </body> </html>Teste e Veja ‹/›
使用 .progress-bar-animated 类可以为进度条添加动画:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>动画进度条</h2> <p>使用 .progress-bar-animated 类可以为进度条添加动画:</p> <div class="progress"> <div class="progress-bar progress-bar-striped progress-bar-animated" style="width:40%"></div> </div> </div> </body> </html>Teste e Veja ‹/›
进度条可以设置多种颜色:
<!DOCTYPE html> <html> <head> <title>Bootstrap 示例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>Mistura de Cores da Barra de Progresso</h2> <p>As barras de progresso podem ser configuradas com várias cores:</p> <div class="progress"> <div class="progress-bar bg-success" style="width:40%"> Espaço Livre </div> <div class="progress-bar bg-warning" style="width:10%"> AVISO </div> <div class="progress-bar bg-danger" style="width:20%"> DANGER </div> </div> </div> </body> </html>Teste e Veja ‹/›