bootstrap输入框组有哪些

互联网 19-7-19

推荐教程：Bootstrap教程

1、Bootstrap4 输入框组

　　我们可以使用 .input-group 类来向表单输入框中添加更多的样式，如图标、文本或者按钮。使用 .input-group-prepend 类可以在输入框的的前面添加文本信息， .input-group-append 类添加在输入框的后面。最后，我们还需要使用 .input-group-text 类来设置文本的样式。

<form>   <div class="input-group mb-3">     <div class="input-group-prepend">       <span class="input-group-text">@</span>     </div>     <input type="text" class="form-control" placeholder="Username">   </div>   <div class="input-group mb-3">     <input type="text" class="form-control" placeholder="Your Email">     <div class="input-group-append">       <span class="input-group-text">@runoob.com</span>     </div>   </div></form>

　　效果图：

2、输入框大小

　　使用 .input-group-sm 类来设置小的输入框， .input-group-lg 类设置大的输入框：

<form>   <div class="input-group mb-3 input-group-sm">      <div class="input-group-prepend">        <span class="input-group-text">Small</span>     </div>     <input type="text" class="form-control">   </div></form><form>   <div class="input-group mb-3">     <div class="input-group-prepend">       <span class="input-group-text">Default</span>     </div>     <input type="text" class="form-control">   </div></form><form>   <div class="input-group mb-3 input-group-lg">     <div class="input-group-prepend">       <span class="input-group-text">Large</span>     </div>     <input type="text" class="form-control">   </div></form>

3、多个输入框和文本

<!-- 多个输入框 --><form>   <div class="input-group mb-3">     <div class="input-group-prepend">       <span class="input-group-text">Person</span>     </div>     <input type="text" class="form-control" placeholder="First Name">     <input type="text" class="form-control" placeholder="Last Name">   </div></form>  <!-- 多个文本信息 --><form>   <div class="input-group mb-3">     <div class="input-group-prepend">       <span class="input-group-text">One</span>       <span class="input-group-text">Two</span>       <span class="input-group-text">Three</span>     </div>     <input type="text" class="form-control">   </div></form>

4、复选框与单选框

<div class="input-group mb-3">   <div class="input-group-prepend">     <div class="input-group-text">       <input type="checkbox">      </div>   </div>   <input type="text" class="form-control" placeholder="RUNOOB"></div>  <div class="input-group mb-3">   <div class="input-group-prepend">     <div class="input-group-text">       <input type="radio">      </div>   </div>   <input type="text" class="form-control" placeholder="GOOGLE"></div>

　　效果图：

5、输入框加按钮组

<div class="input-group mb-3">   <div class="input-group-prepend">     <button class="btn btn-outline-secondary" type="button">Basic Button</button>    </div>   <input type="text" class="form-control" placeholder="Some text"></div>  <div class="input-group mb-3">   <input type="text" class="form-control" placeholder="Search">   <div class="input-group-append">     <button class="btn btn-success" type="submit">Go</button>    </div></div>  <div class="input-group mb-3">   <input type="text" class="form-control" placeholder="Something clever..">   <div class="input-group-append">     <button class="btn btn-primary" type="button">OK</button>      <button class="btn btn-danger" type="button">Cancel</button>    </div></div>

6、设置下拉菜单

<div class="input-group mt-3 mb-3">   <div class="input-group-prepend">     <button type="button" class="btn btn-outline-secondary dropdown-toggle" data-toggle="dropdown">       选择网站    </button>     <div class="dropdown-menu">       <a class="dropdown-item" href="https://www.google.com">GOOGLE</a>       <a class="dropdown-item" href="https://www.runoob.com">RUNOOB</a>       <a class="dropdown-item" href="https://www.taobao.com">TAOBAO</a>     </div>   </div>   <input type="text" class="form-control" placeholder="网站地址"></div>

　　效果图：

7、输入框组标签

　　在输入框组通过在输入框组外围的 label 来设置标签，标签的 for 属性需要与输入框组的 id 对应，点击标签后可以聚焦输入框：

<label for="demo">Write your email here:</label><div class="input-group mb-3">   <input type="text" class="form-control" placeholder="Email" id="demo" name="email">   <div class="input-group-append">     <span class="input-group-text">@runoob.com</span>   </div></div>

　　效果图：