Bootstrap 表單

在本章中，我們將學(xué)習(xí)如何使用 Bootstrap 創(chuàng)建表單。Bootstrap 通過一些簡單的 HTML 標(biāo)簽和擴(kuò)展的類即可創(chuàng)建出不同樣式的表單。

表單布局

Bootstrap 提供了下列類型的表單布局：

  • 垂直表單（默認(rèn)）
  • 內(nèi)聯(lián)表單
  • 水平表單

垂直或基本表單

基本的表單結(jié)構(gòu)是 Bootstrap 自帶的，個(gè)別的表單控件自動接收一些全局樣式。下面列出了創(chuàng)建基本表單的步驟：

  • 向父 <form> 元素添加 role="form"。
  • 把標(biāo)簽和控件放在一個(gè)帶有 class .form-group 的 <div> 中。這是獲取最佳間距所必需的。
  • 向所有的文本元素 <input>、<textarea> 和 <select> 添加 class .form-control。
<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 基本表單</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form role="form">
   <div class="form-group">
      <label for="name">名稱</label>
      <input type="text" class="form-control" id="name" 
         placeholder="請輸入名稱">
   </div>
   <div class="form-group">
      <label for="inputfile">文件輸入</label>
      <input type="file" id="inputfile">
      <p class="help-block">這里是塊級幫助文本的實(shí)例。</p>
   </div>
   <div class="checkbox">
      <label>
      <input type="checkbox"> 請打勾
      </label>
   </div>
   <button type="submit" class="btn btn-default">提交</button>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：


內(nèi)聯(lián)表單

如果需要?jiǎng)?chuàng)建一個(gè)表單，它的所有元素是內(nèi)聯(lián)的，向左對齊的，標(biāo)簽是并排的，請向 <form> 標(biāo)簽添加 class .form-inline。

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 內(nèi)聯(lián)表單</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form class="form-inline" role="form">
   <div class="form-group">
      <label class="sr-only" for="name">名稱</label>
      <input type="text" class="form-control" id="name" 
         placeholder="請輸入名稱">
   </div>
   <div class="form-group">
      <label class="sr-only" for="inputfile">文件輸入</label>
      <input type="file" id="inputfile">
   </div>
   <div class="checkbox">
      <label>
      <input type="checkbox"> 請打勾
      </label>
   </div>
   <button type="submit" class="btn btn-default">提交</button>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：


  • 默認(rèn)情況下，Bootstrap 中的 input、select 和 textarea 有 100% 寬度。在使用內(nèi)聯(lián)表單時(shí)，您需要在表單控件上設(shè)置一個(gè)寬度。
  • 使用 class .sr-only，您可以隱藏內(nèi)聯(lián)表單的標(biāo)簽。

水平表單

水平表單與其他表單不僅標(biāo)記的數(shù)量上不同，而且表單的呈現(xiàn)形式也不同。如需創(chuàng)建一個(gè)水平布局的表單，請按下面的幾個(gè)步驟進(jìn)行：

  • 向父 <form> 元素添加 class .form-horizontal。
  • 把標(biāo)簽和控件放在一個(gè)帶有 class .form-group 的 <div> 中。
  • 向標(biāo)簽添加 class .control-label。
<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 水平表單</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form class="form-horizontal" role="form">
   <div class="form-group">
      <label for="firstname" class="col-sm-2 control-label">名字</label>
      <div class="col-sm-10">
         <input type="text" class="form-control" id="firstname" 
            placeholder="請輸入名字">
      </div>
   </div>
   <div class="form-group">
      <label for="lastname" class="col-sm-2 control-label">姓</label>
      <div class="col-sm-10">
         <input type="text" class="form-control" id="lastname" 
            placeholder="請輸入姓">
      </div>
   </div>
   <div class="form-group">
      <div class="col-sm-offset-2 col-sm-10">
         <div class="checkbox">
            <label>
               <input type="checkbox"> 請記住我
            </label>
         </div>
      </div>
   </div>
   <div class="form-group">
      <div class="col-sm-offset-2 col-sm-10">
         <button type="submit" class="btn btn-default">登錄</button>
      </div>
   </div>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：



支持的表單控件

Bootstrap 支持最常見的表單控件，主要是 input、textarea、checkbox、radio 和 select。

輸入框（Input）

最常見的表單文本字段是輸入框 input。用戶可以在其中輸入大多數(shù)必要的表單數(shù)據(jù)。Bootstrap 提供了對所有原生的 HTML5 的 input 類型的支持，包括：text、password、datetime、datetime-local、date、month、time、week、number、email、url、search、tel 和 color。適當(dāng)?shù)?type 聲明是必需的，這樣才能讓 input 獲得完整的樣式。

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 輸入框</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form role="form">
  <div class="form-group">
    <label for="name">標(biāo)簽</label>
    <input type="text" class="form-control" placeholder="文本輸入">
  </div>
 </form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：


文本框（Textarea）

當(dāng)您需要進(jìn)行多行輸入的時(shí)，則可以使用文本框 textarea。必要時(shí)可以改變 rows 屬性（較少的行 = 較小的盒子，較多的行 = 較大的盒子）。

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 文本框</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form role="form">
  <div class="form-group">
    <label for="name">文本框</label>
    <textarea class="form-control" rows="3"></textarea>
  </div>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：


復(fù)選框（（Checkbox）和單選框（Radio）

復(fù)選框和單選按鈕用于讓用戶從一系列預(yù)設(shè)置的選項(xiàng)中進(jìn)行選擇。

  • 當(dāng)創(chuàng)建表單時(shí)，如果您想讓用戶從列表中選擇若干個(gè)選項(xiàng)時(shí)，請使用 checkbox。如果您限制用戶只能選擇一個(gè)選項(xiàng)，請使用 radio。
  • 對一系列復(fù)選框和單選框使用 .checkbox-inline 或 .radio-inline class，控制它們顯示在同一行上。

下面的實(shí)例演示了這兩種類型（默認(rèn)和內(nèi)聯(lián)）：

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 復(fù)選框和單選按鈕</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<label for="name">默認(rèn)的復(fù)選框和單選按鈕的實(shí)例</label>
<div class="checkbox">
   <label><input type="checkbox" value="">選項(xiàng) 1</label>
</div>
<div class="checkbox">
   <label><input type="checkbox" value="">選項(xiàng) 2</label>
</div>

<div class="radio">
   <label>
      <input type="radio" name="optionsRadios" id="optionsRadios1" 
         value="option1" checked> 選項(xiàng) 1
   </label>
</div>
<div class="radio">
   <label>
      <input type="radio" name="optionsRadios" id="optionsRadios2" 
         value="option2">
         選項(xiàng) 2 - 選擇它將會取消選擇選項(xiàng) 1
   </label>
</div>
<label for="name">內(nèi)聯(lián)的復(fù)選框和單選按鈕的實(shí)例</label>
<div>
   <label class="checkbox-inline">
      <input type="checkbox" id="inlineCheckbox1" value="option1"> 選項(xiàng) 1
   </label>
   <label class="checkbox-inline">
      <input type="checkbox" id="inlineCheckbox2" value="option2"> 選項(xiàng) 2
   </label>
   <label class="checkbox-inline">
      <input type="checkbox" id="inlineCheckbox3" value="option3"> 選項(xiàng) 3
   </label>
   <label class="checkbox-inline">
      <input type="radio" name="optionsRadiosinline" id="optionsRadios3" 
         value="option1" checked> 選項(xiàng) 1
   </label>
   <label class="checkbox-inline">
      <input type="radio" name="optionsRadiosinline" id="optionsRadios4" 
         value="option2"> 選項(xiàng) 2
   </label>
</div>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：


選擇框（Select）

當(dāng)您想讓用戶從多個(gè)選項(xiàng)中進(jìn)行選擇，但是默認(rèn)情況下只能選擇一個(gè)選項(xiàng)時(shí)，則使用選擇框。

  • 使用 <select> 展示列表選項(xiàng)，通常是那些用戶很熟悉的選擇列表，比如州或者數(shù)字。
  • 使用 multiple="multiple" 允許用戶選擇多個(gè)選項(xiàng)。

下面的實(shí)例演示了這兩種類型（select 和 multiple）：

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 選擇框</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form role="form">
   <div class="form-group">
      <label for="name">選擇列表</label>
      <select class="form-control">
         <option>1</option>
         <option>2</option>
         <option>3</option>
         <option>4</option>
         <option>5</option>
      </select>

      <label for="name">可多選的選擇列表</label>
      <select multiple class="form-control">
         <option>1</option>
         <option>2</option>
         <option>3</option>
         <option>4</option>
         <option>5</option>
      </select>
   </div>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：



靜態(tài)控件

當(dāng)您需要在一個(gè)水平表單內(nèi)的表單標(biāo)簽后放置純文本時(shí)，請?jiān)?<p> 上使用 class .form-control-static。

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 靜態(tài)控件</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form class="form-horizontal" role="form">
  <div class="form-group">
    <label class="col-sm-2 control-label">Email</label>
    <div class="col-sm-10">
      <p class="form-control-static">email@example.com</p>
    </div>
  </div>
  <div class="form-group">
    <label for="inputPassword" class="col-sm-2 control-label">密碼</label>
    <div class="col-sm-10">
      <input type="password" class="form-control" id="inputPassword" 
         placeholder="請輸入密碼">
    </div>
  </div>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：



表單控件狀態(tài)

除了 :focus 狀態(tài)（即，用戶點(diǎn)擊 input 或使用 tab 鍵聚焦到 input 上），Bootstrap 還為禁用的輸入框定義了樣式，并提供了表單驗(yàn)證的 class。

輸入框焦點(diǎn)

當(dāng)輸入框 input 接收到 :focus 時(shí)，輸入框的輪廓會被移除，同時(shí)應(yīng)用 box-shadow。

禁用的輸入框 input

如果您想要禁用一個(gè)輸入框 input，只需要簡單地添加 disabled 屬性，這不僅會禁用輸入框，還會改變輸入框的樣式以及當(dāng)鼠標(biāo)的指針懸停在元素上時(shí)鼠標(biāo)指針的樣式。

禁用的字段集 fieldset

對 <fieldset> 添加 disabled 屬性來禁用 <fieldset> 內(nèi)的所有控件。

驗(yàn)證狀態(tài)

Bootstrap 包含了錯(cuò)誤、警告和成功消息的驗(yàn)證樣式。只需要對父元素簡單地添加適當(dāng)?shù)?class（.has-warning、 .has-error 或 .has-success）即可使用驗(yàn)證狀態(tài)。

下面的實(shí)例演示了所有控件狀態(tài)：

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 表單控件狀態(tài)</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form class="form-horizontal" role="form">
   <div class="form-group">
      <label class="col-sm-2 control-label">聚焦</label>
      <div class="col-sm-10">
         <input class="form-control" id="focusedInput" type="text" 
            value="該輸入框獲得焦點(diǎn)...">
      </div>
   </div>
   <div class="form-group">
      <label for="inputPassword" class="col-sm-2 control-label">
         禁用
      </label>
      <div class="col-sm-10">
         <input class="form-control" id="disabledInput" type="text" 
            placeholder="該輸入框禁止輸入..." disabled>
      </div>
   </div>
   <fieldset disabled>
      <div class="form-group">
         <label for="disabledTextInput"  class="col-sm-2 control-label">
            禁用輸入（Fieldset disabled）
         </label>
         <div class="col-sm-10">
            <input type="text" id="disabledTextInput" class="form-control" 
               placeholder="禁止輸入">
         </div>
      </div>
      <div class="form-group">
         <label for="disabledSelect"  class="col-sm-2 control-label">
            禁用選擇菜單（Fieldset disabled）
         </label>
         <div class="col-sm-10">
            <select id="disabledSelect" class="form-control">
               <option>禁止選擇</option>
            </select>
         </div>
      </div>
   </fieldset>
   <div class="form-group has-success">
      <label class="col-sm-2 control-label" for="inputSuccess">
         輸入成功
      </label>
      <div class="col-sm-10">
         <input type="text" class="form-control" id="inputSuccess">
      </div>
   </div>
   <div class="form-group has-warning">
      <label class="col-sm-2 control-label" for="inputWarning">
         輸入警告
      </label>
      <div class="col-sm-10">
         <input type="text" class="form-control" id="inputWarning">
      </div>
   </div>
   <div class="form-group has-error">
      <label class="col-sm-2 control-label" for="inputError">
         輸入錯(cuò)誤
      </label>
      <div class="col-sm-10">
         <input type="text" class="form-control" id="inputError">
      </div>
   </div>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：



表單控件大小

您可以分別使用 class .input-lg 和 .col-lg-* 來設(shè)置表單的高度和寬度。下面的實(shí)例演示了這點(diǎn)：

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 表單控件大小</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form role="form">
   <div class="form-group">
      <input class="form-control input-lg" type="text" 
         placeholder=".input-lg">
   </div>

   <div class="form-group">
      <input class="form-control" type="text" placeholder="默認(rèn)輸入">
   </div>

   <div class="form-group">
      <input class="form-control input-sm" type="text" 
         placeholder=".input-sm">
   </div>
   <div class="form-group">
   </div>
   <div class="form-group">
      <select class="form-control input-lg">
         <option value="">.input-lg</option>
      </select>
   </div>
   <div class="form-group">
      <select class="form-control">
         <option value="">默認(rèn)選擇</option>
      </select>
   </div>
   <div class="form-group">
      <select class="form-control input-sm">
         <option value="">.input-sm</option>
      </select>
   </div>

   <div class="row">
      <div class="col-lg-2">
         <input type="text" class="form-control" placeholder=".col-lg-2">
      </div>
      <div class="col-lg-3">
         <input type="text" class="form-control" placeholder=".col-lg-3">
      </div>
      <div class="col-lg-4">
         <input type="text" class="form-control" placeholder=".col-lg-4">
      </div>
   </div>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：



表單幫助文本

Bootstrap 表單控件可以在輸入框 input 上有一個(gè)塊級幫助文本。為了添加一個(gè)占用整個(gè)寬度的內(nèi)容塊，請?jiān)?<input> 后使用 .help-block。下面的實(shí)例演示了這點(diǎn)：

<!DOCTYPE html>
<html>
<head>
   <title>Bootstrap 實(shí)例 - 表單幫助文本</title>
   <link rel="stylesheet"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
   <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
   <script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
</head>
<body>

<form role="form">
   <span>幫助文本實(shí)例</span>
   <input class="form-control" type="text" placeholder="">
   <span class="help-block">一個(gè)較長的幫助文本塊，超過一行，
   需要擴(kuò)展到下一行。本實(shí)例中的幫助文本總共有兩行。</span>
</form>

</body>
</html>

嘗試一下 ?

結(jié)果如下所示：