使用图标Bootstrap 4搜索输入

Question

不知道我怎么能这样做,因为BS 4不支持glyphicons.我是将其设置为背景还是将不同的定位应用于字体真棒图标？

到目前为止这是我的代码:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">

<div class="form-group col-md-4">
  <input class="form-control rounded-0 py-2" type="search" value="search" id="example-search-input">
</div>
<!-- /.form-group -->

我想使用这个字体很棒的图标.我也尝试过添加它background-image,如:

.form-control {
  background-image: url('https://res.cloudinary.com/dt9b7pad3/image/upload/v1502810110/angle-down-dark_dkyopo.png');
  background-position: right center 5px;
}

但这没有任何作用.我能想到的唯一方法是添加font-awesome图标,然后将定位设置为绝对,对吧？但我不确定这是否是"干净"和正确的方法呢？我需要采取不同的方法吗？有人帮忙!谢谢!

Answer 1

更新2019年

为什么不使用输入组？

<div class="input-group col-md-4">
      <input class="form-control py-2" type="search" value="search" id="example-search-input">
      <span class="input-group-append">
        <button class="btn btn-outline-secondary" type="button">
            <i class="fa fa-search"></i>
        </button>
      </span>
</div>

并且,您可以使用border utils 使其显示在输入内部 ...

        <div class="input-group col-md-4">
            <input class="form-control py-2 border-right-0 border" type="search" value="search" id="example-search-input">
            <span class="input-group-append">
              <button class="btn btn-outline-secondary border-left-0 border" type="button">
                    <i class="fa fa-search"></i>
              </button>
            </span>
        </div>

或者,使用input-group-textw/o灰色背景,使图标出现在输入内...

        <div class="input-group">
            <input class="form-control py-2 border-right-0 border" type="search" value="search" id="example-search-input">
            <span class="input-group-append">
                <div class="input-group-text bg-transparent"><i class="fa fa-search"></i></div>
            </span>
        </div>

或者,您可以使用没有装订线间距的网格(row> col-):

<div class="row no-gutters">
     <div class="col">
          <input class="form-control border-secondary border-right-0 rounded-0" type="search" value="search" id="example-search-input4">
     </div>
     <div class="col-auto">
          <button class="btn btn-outline-secondary border-left-0 rounded-0 rounded-right" type="button">
             <i class="fa fa-search"></i>
          </button>
     </div>
</div>

或者,像这样添加图标......

<div class="input-group">
  <span class="input-group-prepend">
    <div class="input-group-text bg-transparent border-right-0">
      <i class="fa fa-search"></i>
    </div>
  </span>
  <input class="form-control py-2 border-left-0 border" type="search" value="..." id="example-search-input" />
  <span class="input-group-append">
    <button class="btn btn-outline-secondary border-left-0 border" type="button">
     Search
    </button>
  </span>
</div>

演示所有Bootstrap 4 图标输入选项

带验证图标的示例