使用带有圆形文本框的图标 Bootstrap 4 搜索输入

Question

我想要带有搜索图标的圆角搜索框。

以下代码有效，但如果我将“圆形药丸”分类，则图标与文本框分开。

如何使文本框变圆，而图标也保留在其中。

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">

<div class="container">
  <div class="row">
    <div class="col-md-4 mt-5">
      <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">
                    <button class="btn btn-outline-secondary border-left-0 border" type="button">
                        <i class="fa fa-search"></i>
                    </button>
                  </span>
      </div>
    </div>
  </div>
  <div class="row">
    <div class="col-md-4 mt-5">
      <div class="input-group">
        <input class="form-control rounded-pill 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>
    </div>
  </div>
</div>

Answer 1

这是一个仅限 Bootstrap 的解决方案...

使用负边距工具将按钮向左滑动：

 <div class="input-group">
     <input class="form-control py-2 rounded-pill mr-1 pr-5" type="search" value="search">
     <span class="input-group-append">
         <button class="btn rounded-pill border-0 ml-n5" type="button">
               <i class="fa fa-search"></i>
         </button>
     </span>
 </div>

这也适用于使用input-group-text，或使用my other answer 中解释的网格col-auto 方法：

    <div class="row no-gutters mt-3 align-items-center">
        <div class="col-4">
            <input class="form-control border-secondary rounded-pill pr-5" type="search" value="search" id="example-search-input2">
        </div>
        <div class="col-auto">
            <button class="btn btn-outline-light text-dark border-0 rounded-pill ml-n5" type="button">
                <i class="fa fa-search"></i>
            </button>
        </div>
    </div>

https://www.codeply.com/go/cDQQcNY8kP

Answer 2

我不是 100% 确定，但根据我的研究，Bootstrap 4.3.1（今天的最新版本）不允许仅使用预定义的 Bootstrap 类来获得您想要的。

这是一个包含一些 CSS 类的示例，您可以将这些类包含在您的代码中，并且可以让您获得所需的结果。查看代码段！

/* Rounded pill classes for horizontal sides */
.rounded-pill-left {
  border-top-left-radius: 50rem !important;
  border-bottom-left-radius: 50rem !important;
}
.rounded-pill-right {
  border-top-right-radius: 50rem !important;
  border-bottom-right-radius: 50rem !important;
}

/* Another classes to use */
.rounded-t-l-0 {
  border-top-left-radius: 0 !important;
}
.rounded-t-r-0 {
  border-top-right-radius: 0 !important;
}
.rounded-b-l-0 {
  border-bottom-left-radius: 0 !important;
}
.rounded-b-r-0 {
  border-bottom-right-radius: 0 !important;
}
.rounded-x-l-0 {
  border-top-left-radius: 0 !important;
  border-bottom-left-radius: 0 !important;
}
.rounded-x-r-0 {
  border-top-right-radius: 0 !important;
  border-bottom-right-radius: 0 !important;
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">

<div class="container">
  <div class="row">
    <div class="col-md-4 mt-5">
      <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">
          <button class="btn btn-outline-secondary border-left-0 border" type="button">
              <i class="fa fa-search"></i>
          </button>
        </span>
      </div>
    </div>
  </div>
  <div class="row">
    <div class="col-md-4 mt-5">
      <div class="input-group">
        <input class="form-control border rounded-pill-left border-right-0" type="search" value="search" id="example-search-input">
        <span class="input-group-append">
          <button class="btn btn-outline-secondary border rounded-pill-right border-left-0" type="button">
              <i class="fa fa-search"></i>
          </button>
        </span>
      </div>
    </div>
  </div>
</div>