Bootstrap - 旋转器

本章将讨论 Bootstrap 微调器。Bootstrap spinner 使用.spinner类显示项目的加载状态。

怎么运行的

Bootstrap 微调器使用 HTML 和 CSS 显示项目的加载状态。构建它们不需要 JavaScript。
需要自定义 JavaScript 来切换其可见性。可以使用 Bootstrap 的实用程序类轻松自定义外观、对齐方式和大小。
每个加载器都有role="status"和嵌套的<span class="visually-hidden">正在加载... </span >以实现可访问性。

边框旋转器

使用.spinner-border类创建轻量级微调器/加载指示器。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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

边框微调器使用currentColor作为其边框颜色，可以使用文本颜色实用程序进行自定义。在标准微调器上使用文本颜色实用程序。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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程序？边框微调器的一侧具有透明边框，由.border-{color}实用程序覆盖。

种植旋转器

您可以将微调器的旋转类型更改为生长微调器。从技术上讲，它不会旋转，但会反复生长。
使用.spinner-grow类创建增长微调器。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

该微调器使用currentColor通过文本颜色实用程序更改其外观。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

结盟

Bootstrap 微调器是用rem s、currentColor和display: inline-flex设计的。它们可以轻松调整大小、重新着色和对齐。

利润

对于简单的间距，请使用边距实用程序，例如.m-4。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

放置

可以使用flexbox 实用程序、浮动实用程序或文本对齐实用程序来放置 Bootstrap 微调器。

柔性

使用 Flexbox 放置类来设置微调器的位置。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

您可以使用弹性盒放置来更改微调器对齐方式。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

漂浮

使用浮动放置类来设置微调器的位置。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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放置类来设置微调器项目的位置。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

尺寸

旋转器尺寸可用于创建各种尺寸的旋转器。

对于小型旋转器，请使用.spinner-border-sm和.spinner-grow-sm类。
对于中型旋转器，请使用.spinner-border-md和.spinner-grow-md类。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>

纽扣

按钮微调器用于显示当前正在处理的操作。如果需要，请将微调器元素文本替换为按钮文本。
使用.btn和.spinner-border类创建微调按钮。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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类创建不断增长的微调按钮。

例子

您可以使用编辑和运行选项编辑并尝试运行此代码。

    <!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/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.jsdelivr.net/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>