State class applied to {{nodeName}} if {{conditions}}.

Provides context such as filled/focused/error/required for form inputs.
Relying on the context provides high flexibility and ensures that the state always stays
consistent across the children of the <code>FormControl</code>.
This context is used by the following components:
<ul>
<li>FormLabel</li>
<li>FormHelperText</li>
<li>Input</li>
<li>InputLabel</li>
</ul>
You can find one composition example below and more going to <a href="https://mui.org.cn/material-ui/react-text-field/#components">the demos</a>.
<div class="MuiCode-root"><pre><code class="language-jsx">&lt;FormControl>
 &lt;InputLabel htmlFor="my-input">Email address&lt;/InputLabel>
 &lt;Input id="my-input" aria-describedby="my-helper-text" />
 &lt;FormHelperText id="my-helper-text">We'll never share your email.&lt;/FormHelperText>
&lt;/FormControl>
</code></pre><button data-ga-event-category="code" data-ga-event-action="copy-click" aria-label="Copy the code" class="MuiCode-copy">CopyCopied(or $keyC)</button></div>
⚠️ Only one <code>Input</code> can be used within a FormControl because it create visual inconsistencies.
For instance, only one input can be focused at the same time, the state shouldn&#39;t be shared.

If <code>true</code>, the label, input and helper text should be displayed in a disabled state.

If <code>true</code>, the label is displayed in an error state.

Callback fired when the form element&#39;s value is modified.

If <code>true</code>, the label will indicate that the <code>input</code> is required.

The props used for each slot inside the FormControl.

The components used for each slot inside the FormControl. Either a string to use a HTML element or a component.

State class applied to the root element if `disabled={true}`.

State class applied to the root element if `error={true}`.

State class applied to the root element if the inner input has value.

State class applied to the root element if the inner input is focused.

State class applied to the root element if `required={true}`.

FormControl

union

string

bool

func

shape

root

If <code>true</code>, the form element has some value.

If <code>true</code>, the form element is focused and not disabled.

Callback fired when the form element has lost focus.

Callback fired when the form element receives focus.

useFormControlContext

boolean

() =&gt; void

React.ChangeEventHandler&lt;NativeFormControlElement&gt;

名称	类型	默认值	描述
children	node \| func	-	组件的内容。
className	string	-	应用于根元素的类名。
disabled	bool	false	如果为 `true`，标签、输入框和辅助文本应显示为禁用状态。
error	bool	false	如果为 `true`，标签将显示为错误状态。
onChange	func	-	当表单元素的值被修改时触发的回调函数。
required	bool	false	如果为 `true`，标签将指示 `input` 为必填项。
slotProps	{ root?: func \| object }	{}	用于 FormControl 内部每个插槽的属性。
slots	{ root?: elementType }	{}	用于 FormControl 内部每个插槽的组件。可以是用于 HTML 元素的字符串或组件。有关更多详细信息，请参见下面的插槽 API。
value	any	-	表单元素的值。

类名	描述
.base--disabled	如果 `disabled={true}`，则应用于根元素的状态类。
.base--error	如果 `error={true}`，则应用于根元素的状态类。
.base--focused	如果内部输入框获得焦点，则应用于根元素的状态类。
.base--required	如果 `required={true}`，则应用于根元素的状态类。
.base-FormControl-filled	如果内部输入框有值，则应用于根元素的状态类。

表单控件

FormControl API

导入

属性

插槽

CSS 类