将Twitter Bootstrap图标添加到“输入”框

Question

我们如何在文本输入元素的右侧添加Twitter Bootstrap图标icon-search？

以下尝试将所有图标放在input元素中，我们如何裁剪它以便它只显示icon-search的图标？

当前尝试

CSS

input.search-box {
    width: 180px;
    background: #333;
    background-image: url('/img/glyphicons-halflings-white.png');
    background-position: -48px 0;
    padding-left: 30px;
    margin-top: 45px;
    border: 0;
    float: right;
}

Answer 1

更新了Bootstrap 3.x

您可以像这样使用.input-group类：

<div class="input-group">
    <input type="text" class="form-control"/>
    <span class="input-group-addon">
        <i class="fa fa-search"></i>
    </span>
</div>

Working Demo in jsFiddle for 3.x

---

Bootstrap 2.x

您可以像这样使用.input-append类：

<div class="input-append">
    <input class="span2" type="text">
    <button type="submit" class="btn">
        <i class="icon-search"></i>
    </button>
</div>

Working Demo in jsFiddle for 2.x

---

两者都将如下所示：

如果您想要输入框中的图标，请执行以下操作：

然后查看我对Add a Bootstrap Glyphicon to Input Box

的回答

Answer 2

Bootstrap 4.x具有3种不同的方式。

1. 具有默认引导样式的图标

   <div class="input-group">
         <input type="text" class="form-control" placeholder="From" aria-label="from" aria-describedby="from">
         <div class="input-group-append">
           <span class="input-group-text"><i class="fas fa-map-marker-alt"></i></span>
         </div>
       </div>
   

2. 具有默认引导程序类的图标内部输入

   <div class="input-group">
         <input type="text" class="form-control border-right-0" placeholder="From" aria-label="from" aria-describedby="from">
         <div class="input-group-append">
           <span class="input-group-text bg-transparent"><i class="fas fa-map-marker-alt"></i></span>
         </div>
   
   </div>
   

3. 带有小型自定义CSS的图标内部输入

   <div class="input-group">
         <input type="text" class="form-control rounded-right" placeholder="From" aria-label="from" aria-describedby="from">
           <span class="icon-inside"><i class="fas fa-map-marker-alt"></i></span>
       </div> 
   

   自定义CSS

   .icon-inside {
         position: absolute;
         right: 10px;
         top: calc(50% - 12px);
         pointer-events: none;
         font-size: 16px;
         font-size: 1.125rem;
         color: #c4c3c3;
         z-index:3;
       }
   

.icon-inside {
      position: absolute;
      right: 10px;
      top: calc(50% - 12px);
      pointer-events: none;
      font-size: 16px;
      font-size: 1.125rem;
      color: #c4c3c3;
      z-index:3;
    }

<link rel="stylesheet" type="text/css" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" />
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.2.0/css/all.css" integrity="sha384-hWVjflwFxL6sNzntih27bfxkr27PmbbK/iSvJ+a4+0owXq79v+lsFkW54bOGbiDQ" crossorigin="anonymous">

    <div class="container">
    <h5 class="mt-3">Icon <small>with default bootstrap Style</small><h5>
    <div class="input-group">
      <input type="text" class="form-control" placeholder="From" aria-label="from" aria-describedby="from">
      <div class="input-group-append">
        <span class="input-group-text"><i class="fas fa-map-marker-alt"></i></span>
      </div>
    </div>

    <h5 class="mt-3">Icon Inside Input <small>with default bootstrap class</small><h5>
    <div class="input-group">
      <input type="text" class="form-control border-right-0" placeholder="From" aria-label="from" aria-describedby="from">
      <div class="input-group-append">
        <span class="input-group-text bg-transparent"><i class="fas fa-map-marker-alt"></i></span>
      </div>
    </div>

    <h5 class="mt-3">Icon Inside Input<small> with small custom css</small><h5>
    <div class="input-group">
      <input type="text" class="form-control rounded-right" placeholder="From" aria-label="from" aria-describedby="from">
        <span class="icon-inside"><i class="fas fa-map-marker-alt"></i></span>
    </div>

    </div>

Answer 3

由于glyphicons图像是一个精灵，你真的不能这样做：从根本上你想要的是限制背景的大小，但没有办法指定背景的大小。您可以剪切所需的图标，将其缩小并使用它，或者使用输入字段前置/附加选项（http://twitter.github.io/bootstrap/base-css.html#forms等内容，然后搜索前置输入）。

Answer 4

对于bootstrap 4

        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">

            <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
            <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
            <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
        <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
        <form class="form-inline my-2 my-lg-0">
                        <div class="input-group">
                            <input class="form-control" type="search" placeholder="Search">
                            <div class="input-group-append">
                                <div class="input-group-text"><i class="fa fa-search"></i></div>
                            </div>
                        </div>
                    </form>

Demo

Answer 5

Bootstrap 4.x

有了Bootstrap 4（和Font Awesome），我们仍然可以在 input-group 元素周围使用 form-control 包装器，现在我们可以将 input-group-append （或 input-group-prepend ）包装与 input-group-text 结合使用以完成工作：

<div class="input-group mb-3">
  <input type="text" class="form-control" placeholder="Search" aria-label="Search" aria-describedby="my-search">
  <div class="input-group-append">
    <span class="input-group-text" id="my-search"><i class="fas fa-filter"></i></span>
  </div>
</div>

它看起来像这样（感谢KyleMit的屏幕截图）：

通过访问Input group文档了解更多信息。