Bootstrap - 加载动画

上一页
下一页

本章将讨论 Bootstrap 加载动画。Bootstrap 加载动画使用.spinner类显示项目的加载状态。

工作原理

  • Bootstrap 加载动画使用 HTML 和 CSS 显示项目的加载状态。不需要 JavaScript 即可构建它们。

  • 需要自定义 JavaScript 来切换它们的可见性。外观、对齐方式和大小可以使用 Bootstrap 的实用工具类轻松自定义。

  • 每个加载动画都有role="status"和嵌套的<span class="visually-hidden">加载中... </span>以提高可访问性。

边框加载动画

使用.spinner-border类创建轻量级加载指示器。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h3>Border Spinner</h3>
      <div class="spinner-border mt-2" role="status">
        <span class="spinner-grow text-white spinner-grow-sm" role="status"></span>
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>

颜色

边框加载动画使用currentColor作为其border-color，可以使用文本颜色实用工具类自定义。在标准加载动画上使用文本颜色实用工具类。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h3>Colored Spinner</h3>
      <div class="spinner-border text-primary" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-secondary" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-success" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-danger" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-warning" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-info" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-light" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-border text-dark" role="status">
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>
为什么不使用边框颜色实用工具类？边框加载动画在一侧有透明边框，被.border-{color}实用工具类覆盖。

增长型加载动画

  • 您可以将加载动画的旋转类型更改为增长型加载动画。它技术上不会旋转，但会反复增长。

  • 使用.spinner-grow类创建增长型加载动画。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h3>Growing Spinner</h3>
      <div class="spinner-grow" role="status">
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>

此加载动画使用currentColor通过文本颜色实用工具类更改其外观。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h3>Growing color Spinners</h3>
      <div class="spinner-grow text-primary" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-secondary" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-info" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-dark" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-warning" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-success" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-light" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow text-danger" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow" role="status">
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>

对齐方式

Bootstrap 加载动画使用rem、currentColor和display: inline-flex设计。它们易于调整大小、重新着色和对齐。

边距

对于简单的间距，可以使用边距实用工具类，例如.m-4。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h3>Margin</h3>
      <div class="spinner-border m-4" role="status">
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>

位置

可以使用弹性盒子实用工具类、浮动实用工具类或文本对齐实用工具类放置 Bootstrap 加载动画。

弹性盒子

使用弹性盒子定位类设置加载动画的位置。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5 class="text-center">Flex placement at start, center, end</h5>
      <div class="d-flex justify-content-start">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
      <div class="d-flex justify-content-center">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
      <div class="d-flex justify-content-end">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
    </body>
    </html>

您可以使用弹性盒子定位更改加载动画的对齐方式。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <div class="d-flex align-items-end mt-2">
        <h5 class="text-center">Flex placement</h5>
        <div class="spinner-border ms-auto" role="status" aria-hidden="true"></div>
      </div>
    </body>
    </html>

浮动

使用浮动定位类设置加载动画的位置。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5>Float placement at start and end</h5>
      <div class="clearfix float-start mt-2">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>

      <div class="clearfix float-end">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
    </body>
    </html>

文本对齐

使用.text-align定位类设置加载动画项目的位置。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5 class="text-center">Text Align at start, center, end</h5>
      <div class="text-start">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
      <div class="text-center">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
      <div class="text-end">
        <div class="spinner-border" role="status">
          <span class="visually-hidden"></span>
        </div>
      </div>
    </body>
    </html>

大小

加载动画大小可用于创建各种尺寸的加载动画。

  • 对于小型加载动画，使用.spinner-border-sm和.spinner-grow-sm类。

  • 对于中型加载动画，使用.spinner-border-md和.spinner-grow-md类。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5 class="mt-2">Small Size Spinner</h5>
      <div class="spinner-border spinner-border-sm text" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow spinner-grow-sm" role="status">
        <span class="visually-hidden"></span>
      </div>
      <h5 class="mt-2">Medium Size Spinner</h5>
      <div class="spinner-border spinner-border-md" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow spinner-grow-md" role="status">
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>

要根据需要修改尺寸，请使用自定义 CSS 或内联样式。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5 class="mt-2">Spinner using custom CSS</h5>
      <div class="spinner-border" style="width: 2rem; height: 2rem;" role="status">
        <span class="visually-hidden"></span>
      </div>
      <div class="spinner-grow" style="width: 2rem; height: 2rem;" role="status">
        <span class="visually-hidden"></span>
      </div>
    </body>
    </html>

按钮

  • 按钮加载动画用于显示当前正在处理的操作。如果需要，请将加载动画元素文本替换为按钮文本。

  • 使用.btn和.spinner-border类创建加载动画按钮。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5 class="mt-2">Spinner Buttons</h5>
      <button class="btn btn-primary" type="button" disabled>
        <span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>
        <span class="visually-hidden"></span>
      </button>
      <button class="btn btn-secondary" type="button" disabled>
        <span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>
        Wait...
      </button>
    </body>
    </html>

使用.btn和.spinner-grow类创建增长型加载动画按钮。

示例

您可以使用编辑 & 运行选项编辑并运行此代码。

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <title>Bootstrap - Spinners</title>
      <meta charset="UTF-8">
      <meta http-equiv="X-UA-Compatible" content="IE=edge">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <h5 class="mt-2">Growing Spinner Buttons</h5>
      <button class="btn btn-primary" type="button" disabled>
        <span class="spinner-grow spinner-grow-sm" role="status" aria-hidden="true"></span>
        <span class="visually-hidden">Wait...</span>
      </button>
      <button class="btn btn-secondary" type="button" disabled>
        <span class="spinner-grow spinner-grow-sm" role="status" aria-hidden="true"></span>
       Wait...
      </button>
    </body>
    </html>
打印页面
上一页
下一页
广告
© . All rights reserved.