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53 lines
2.9 KiB
Markdown
53 lines
2.9 KiB
Markdown
---
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category: Components
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type: Data Entry
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cols: 2
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title: AutoComplete
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---
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Autocomplete function of input field.
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## When To Use
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When there is a need for autocomplete functionality.
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## API
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| allowClear | Show clear button, effective in multiple mode only. | boolean | false | |
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| autoFocus | get focus when component mounted | boolean | false | |
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| backfill | backfill selected item the input when using keyboard | boolean | false | |
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| children (for customize input element) | customize input element | HTMLInputElement <br /><br /> HTMLTextAreaElement <br /><br /> `React.ReactElement<InputProps>` | `<Input />` | |
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| children (for dataSource) | Data source to auto complete | `React.ReactElement<OptionProps>` <br /><br /> `Array<React.ReactElement<OptionProps>>` | - | |
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| defaultActiveFirstOption | Whether active first option by default | boolean | true | |
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| defaultValue | Initial selected option. | string\|string\[] | - | |
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| disabled | Whether disabled select | boolean | false | |
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| filterOption | If true, filter options by input, if function, filter options against it. The function will receive two arguments, `inputValue` and `option`, if the function returns `true`, the option will be included in the filtered set; Otherwise, it will be excluded. | boolean or function(inputValue, option) | true | |
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| optionLabelProp | Which prop value of option will render as content of select. | string | `children` | |
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| placeholder | placeholder of input | string | - | |
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| value | selected option | string\|string\[]\|{ key: string, label: string\|ReactNode }\|Array<{ key: string, label: string\|ReactNode }> | - | |
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| onBlur | Called when leaving the component. | function() | - | |
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| onChange | Called when select an option or input value change, or value of input is changed | function(value) | - | |
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| onFocus | Called when entering the component | function() | - | |
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| onSearch | Called when searching items. | function(value) | - | |
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| onSelect | Called when a option is selected. param is option's value and option instance. | function(value, option) | - | |
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| defaultOpen | Initial open state of dropdown | boolean | - | |
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| open | Controlled open state of dropdown | boolean | - | |
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| onDropdownVisibleChange | Call when dropdown open | function(open) | - | |
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## Methods
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| Name | Description | Version |
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| ------- | ------------ | ------- |
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| blur() | remove focus | |
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| focus() | get focus | |
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## FAQ
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### Why doesn't the text composition system work well with onSearch in controlled mode?
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Please use `onChange` to manage control state. `onSearch` is used for searching input which is not same as `onChange`. Besides, clicking on the option will not trigger the `onSearch` event.
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Related issue: [#18230](https://github.com/ant-design/ant-design/issues/18230) [#17916](https://github.com/ant-design/ant-design/issues/17916)
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