表单控件
给文本表单控件,如<input>
和<textarea>
升级其能力,包括自定义样式、大小、焦点状态等等。
例子
<div class="mb-3">
<label for="exampleFormControlInput1" class="form-label">Email address</label>
<input type="email" class="form-control" id="exampleFormControlInput1" placeholder="name@example.com">
</div>
<div class="mb-3">
<label for="exampleFormControlTextarea1" class="form-label">Example textarea</label>
<textarea class="form-control" id="exampleFormControlTextarea1" rows="3"></textarea>
</div>
文本格式(Form text)
<label for="inputPassword5" class="form-label">Password</label>
<input type="password" id="inputPassword5" class="form-control" aria-labelledby="passwordHelpBlock">
<div id="passwordHelpBlock" class="form-text">
Your password must be 8-20 characters long, contain letters and numbers, and must not contain spaces, special characters, or emoji.
</div>
Inline text can use any typical inline HTML element (be it a <span>
, <small>
, or something else) with nothing more than the .form-text
class.
<div class="row g-3 align-items-center">
<div class="col-auto">
<label for="inputPassword6" class="col-form-label">Password</label>
</div>
<div class="col-auto">
<input type="password" id="inputPassword6" class="form-control" aria-labelledby="passwordHelpInline">
</div>
<div class="col-auto">
<span id="passwordHelpInline" class="form-text">
Must be 8-20 characters long.
</span>
</div>
</div>
尺寸
使用.form-control-lg
和.form-control-sm
来设置高度。
<input class="form-control form-control-lg" type="text" placeholder=".form-control-lg" aria-label=".form-control-lg example">
<input class="form-control" type="text" placeholder="Default input" aria-label="default input example">
<input class="form-control form-control-sm" type="text" placeholder=".form-control-sm" aria-label=".form-control-sm example">
禁用
在一个输入上添加disabled
布尔属性,使其呈现灰色,并删除指针事件。
<input class="form-control" type="text" placeholder="Disabled input" aria-label="Disabled input example" disabled>
<input class="form-control" type="text" placeholder="Disabled readonly input" aria-label="Disabled input example" disabled readonly>
只读
在一个输入上添加readonly(只读)
的布尔属性,以防止修改输入的值。
<input class="form-control" type="text" placeholder="Readonly input here..." aria-label="readonly input example" readonly>
只读的纯文本
如果你想让你的表单中的<input readonly>
元素被样式化为纯文本,使用.form-control-plaintext
类来移除默认的表单字段样式,并保留正确的边距和padding。
<div class="mb-3 row">
<label for="staticEmail" class="col-sm-2 col-form-label">Email</label>
<div class="col-sm-10">
<input type="text" readonly class="form-control-plaintext" id="staticEmail" value="email@example.com">
</div>
</div>
<div class="mb-3 row">
<label for="inputPassword" class="col-sm-2 col-form-label">Password</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="inputPassword">
</div>
</div>
<form class="row g-3">
<div class="col-auto">
<label for="staticEmail2" class="visually-hidden">Email</label>
<input type="text" readonly class="form-control-plaintext" id="staticEmail2" value="email@example.com">
</div>
<div class="col-auto">
<label for="inputPassword2" class="visually-hidden">Password</label>
<input type="password" class="form-control" id="inputPassword2" placeholder="Password">
</div>
<div class="col-auto">
<button type="submit" class="btn btn-primary mb-3">Confirm identity</button>
</div>
</form>
颜色
<label for="exampleColorInput" class="form-label">Color picker</label>
<input type="color" class="form-control form-control-color" id="exampleColorInput" value="#563d7c" title="Choose your color">
数据列表(Datalists)
Datalists允许你创建<option>
,可以从<input>
中访问(和自动完成)。这类似于<select>
元素,但有更多的菜单样式限制和差异。虽然大多数浏览器和操作系统包括对<datalist>
元素的一些支持,但它们的风格设计充其量是不一致的。
了解更多关于支持数据列表元素。
<label for="exampleDataList" class="form-label">Datalist example</label>
<input class="form-control" list="datalistOptions" id="exampleDataList" placeholder="Type to search...">
<datalist id="datalistOptions">
<option value="San Francisco">
<option value="New York">
<option value="Seattle">
<option value="Los Angeles">
<option value="Chicago">
</datalist>