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	描述
disabled	boolean	如果为 `true`，标签、输入框和辅助文本应以禁用状态显示。
error	boolean	如果为 `true`，标签将以错误状态显示。
filled	boolean	如果为 `true`，则表单元素具有某些值。
focused	boolean	如果为 `true`，则表单元素已聚焦且未禁用。
onBlur	() => void	当表单元素失去焦点时触发的回调。
onChange	React.ChangeEventHandler<NativeFormControlElement>	当表单元素的值被修改时触发的回调。
onFocus	() => void	当表单元素接收焦点时触发的回调。
required	boolean	如果为 `true`，标签将指示 `input` 是必需的。
value	unknown	表单元素的值。

表单控件

useFormControlContext API

导入

返回值