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94 lines
4.0 KiB
Markdown
94 lines
4.0 KiB
Markdown
---
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category: Components
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type: Data Entry
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title: Input
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cover: https://gw.alipayobjects.com/zos/alicdn/xS9YEJhfe/Input.svg
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---
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A basic widget for getting the user input is a text field. Keyboard and mouse can be used for providing or changing data.
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## When To Use
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- A user input in a form field is needed.
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- A search input is required.
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## API
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### Input
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| addonAfter | The label text displayed after (on the right side of) the input field. | string\|ReactNode | |
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| addonBefore | The label text displayed before (on the left side of) the input field. | string\|ReactNode | |
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| defaultValue | The initial input content | string | |
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| disabled | Whether the input is disabled. | boolean | false |
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| id | The ID for input | string | |
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| maxLength | max length | number | |
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| prefix | The prefix icon for the Input. | string\|ReactNode | |
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| size | The size of the input box. Note: in the context of a form, the `large` size is used. | `large` \| `middle` \| `small` | |
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| suffix | The suffix icon for the Input. | string\|ReactNode | |
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| type | The type of input, see: [MDN](https://developer.mozilla.org/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types)(use `Input.TextArea` instead of `type="textarea"`) | string | `text` |
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| value | The input content value | string | |
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| onChange | callback when user input | function(e) | |
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| onPressEnter | The callback function that is triggered when Enter key is pressed. | function(e) | |
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| allowClear | allow to remove input content with clear icon | boolean | |
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> When `Input` is used in a `Form.Item` context, if the `Form.Item` has the `id` and `options` props defined then `value`, `defaultValue`, and `id` props of `Input` are automatically set.
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The rest of the props of Input are exactly the same as the original [input](https://facebook.github.io/react/docs/events.html#supported-events).
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### Input.TextArea
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| autoSize | Height autosize feature, can be set to `true|false` or an object `{ minRows: 2, maxRows: 6 }`. | boolean\|object | false |
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| defaultValue | The initial input content | string | |
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| value | The input content value | string | |
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| onPressEnter | The callback function that is triggered when Enter key is pressed. | function(e) | |
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| allowClear | allow to remove input content with clear icon | boolean | |
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| onResize | The callback function that is triggered when resize | function({ width, height }) | |
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The rest of the props of `Input.TextArea` are the same as the original [textarea](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/textarea).
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#### Input.Search
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| enterButton | to show an enter button after input. This property conflicts with the `addonAfter` property. | boolean\|ReactNode | false |
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| onSearch | The callback function triggered when you click on the search-icon, the clear-icon or press the Enter key. | function(value, event) | |
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| loading | Search box with loading. | boolean | |
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Supports all props of `Input`.
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#### Input.Group
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| compact | Whether use compact style | boolean | false |
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| size | The size of `Input.Group` specifies the size of the included `Input` fields. Available: `large` `default` `small` | string | `default` |
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```jsx
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<Input.Group>
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<input />
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<input />
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</Input.Group>
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```
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#### Input.Password
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| Property | Description | Type | Default |
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| ---------------- | -------------------------- | ------- | ------- |
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| visibilityToggle | Whether show toggle button | boolean | true |
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## FAQ
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### Why Input lose focus when change `prefix/suffix`
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When Input dynamic add or remove `prefix/suffix` will make React recreate the dom structure and new input will be not focused. You can set an empty `<span />` element to keep the dom structure:
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```jsx
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const suffix = condition ? <Icon type="smile" /> : <span />;
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<Input suffix={suffix} />;
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```
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