AutoComplete自动完成

输入框自动完成功能。

何时使用#

需要自动完成时。

代码演示

基本使用。通过 dataSource 设置自动完成的数据源

import { AutoComplete } from 'antd';

function onSelect(value) {
  console.log('onSelect', value);
}

class Complete extends React.Component {
  state = {
    dataSource: [],
  }

  handleSearch = (value) => {
    this.setState({
      dataSource: !value ? [] : [
        value,
        value + value,
        value + value + value,
      ],
    });
  }

  render() {
    const { dataSource } = this.state;
    return (
      <AutoComplete
        dataSource={dataSource}
        style={{ width: 200 }}
        onSelect={onSelect}
        onSearch={this.handleSearch}
        placeholder="input here"
      />
    );
  }
}

ReactDOM.render(<Complete />, mountNode);

自定义输入组件

自定义输入组件。

import { AutoComplete, Input } from 'antd';
const { TextArea } = Input;

function onSelect(value) {
  console.log('onSelect', value);
}

class Complete extends React.Component {
  state = {
    dataSource: [],
  }

  handleSearch = (value) => {
    this.setState({
      dataSource: !value ? [] : [
        value,
        value + value,
        value + value + value,
      ],
    });
  }

  handleKeyPress = (ev) => {
    console.log('handleKeyPress', ev);
  }

  render() {
    const { dataSource } = this.state;
    return (
      <AutoComplete
        dataSource={dataSource}
        style={{ width: 200, height: 50 }}
        onSelect={onSelect}
        onSearch={this.handleSearch}
        placeholder="input here"
      >
        <TextArea className="custom" onKeyPress={this.handleKeyPress} style={{ height: 50 }} />
      </AutoComplete>
    );
  }
}

ReactDOM.render(<Complete />, mountNode);

查询模式 - 确定类目

查询模式: 确定类目示例。

import { Icon, Input, AutoComplete } from 'antd';
const Option = AutoComplete.Option;
const OptGroup = AutoComplete.OptGroup;

const dataSource = [{
  title: '话题',
  children: [{
    title: 'AntDesign',
    count: 10000,
  }, {
    title: 'AntDesign UI',
    count: 10600,
  }],
}, {
  title: '问题',
  children: [{
    title: 'AntDesign UI 有多好',
    count: 60100,
  }, {
    title: 'AntDesign 是啥',
    count: 30010,
  }],
}, {
  title: '文章',
  children: [{
    title: 'AntDesign 是一个设计语言',
    count: 100000,
  }],
}];

function renderTitle(title) {
  return (
    <span>
      {title}
      <a
        style={{ float: 'right' }}
        href="https://www.google.com/search?q=antd"
        target="_blank"
        rel="noopener noreferrer"
      >更多
      </a>
    </span>
  );
}

const options = dataSource.map(group => (
  <OptGroup
    key={group.title}
    label={renderTitle(group.title)}
  >
    {group.children.map(opt => (
      <Option key={opt.title} value={opt.title}>
        {opt.title}
        <span className="certain-search-item-count">{opt.count} 人 关注</span>
      </Option>
    ))}
  </OptGroup>
)).concat([
  <Option disabled key="all" className="show-all">
    <a
      href="https://www.google.com/search?q=antd"
      target="_blank"
      rel="noopener noreferrer"
    >
      查看所有结果
    </a>
  </Option>,
]);

function Complete() {
  return (
    <div className="certain-category-search-wrapper" style={{ width: 250 }}>
      <AutoComplete
        className="certain-category-search"
        dropdownClassName="certain-category-search-dropdown"
        dropdownMatchSelectWidth={false}
        dropdownStyle={{ width: 300 }}
        size="large"
        style={{ width: '100%' }}
        dataSource={options}
        placeholder="input here"
        optionLabelProp="value"
      >
        <Input suffix={<Icon type="search" className="certain-category-icon" />} />
      </AutoComplete>
    </div>
  );
}

ReactDOM.render(<Complete />, mountNode);
.certain-category-search.ant-select-auto-complete .ant-input-affix-wrapper .ant-input-suffix {
  right: 12px;
}

.certain-category-search-dropdown .ant-select-dropdown-menu-item-group-title {
  color: #666;
  font-weight: bold;
}

.certain-category-search-dropdown .ant-select-dropdown-menu-item-group {
  border-bottom: 1px solid #F6F6F6;
}

.certain-category-search-dropdown .ant-select-dropdown-menu-item {
  padding-left: 16px;
}

.certain-category-search-dropdown .ant-select-dropdown-menu-item.show-all {
  text-align: center;
  cursor: default;
}

.certain-category-search-dropdown .ant-select-dropdown-menu {
  max-height: 300px;
}

.certain-search-item-count {
 position: absolute;
 color: #999;
 right: 16px;
}

.certain-category-search.ant-select-focused .certain-category-icon {
  color: #108ee9;
}

.certain-category-icon {
  color: #6E6E6E;
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  font-size: 16px;
}

自定义选项

也可以直接传 AutoComplete.Option 作为 AutoComplete 的 children，而非使用 dataSource。

import { AutoComplete } from 'antd';

const Option = AutoComplete.Option;

class Complete extends React.Component {
  state = {
    result: [],
  }

  handleSearch = (value) => {
    let result;
    if (!value || value.indexOf('@') >= 0) {
      result = [];
    } else {
      result = ['gmail.com', '163.com', 'qq.com'].map(domain => `${value}@${domain}`);
    }
    this.setState({ result });
  }

  render() {
    const { result } = this.state;
    const children = result.map((email) => {
      return <Option key={email}>{email}</Option>;
    });
    return (
      <AutoComplete
        style={{ width: 200 }}
        onSearch={this.handleSearch}
        placeholder="input here"
      >
        {children}
      </AutoComplete>
    );
  }
}

ReactDOM.render(<Complete />, mountNode);

不区分大小写

不区分大小写的 AutoComplete

import { AutoComplete } from 'antd';

const dataSource = ['Burns Bay Road', 'Downing Street', 'Wall Street'];

function Complete() {
  return (
    <AutoComplete
      style={{ width: 200 }}
      dataSource={dataSource}
      placeholder="try to type `b`"
      filterOption={(inputValue, option) => option.props.children.toUpperCase().indexOf(inputValue.toUpperCase()) !== -1}
    />
  );
}

ReactDOM.render(<Complete />, mountNode);

查询模式 - 不确定类目

查询模式: 不确定类目示例。

import { Icon, Button, Input, AutoComplete } from 'antd';
const Option = AutoComplete.Option;

function onSelect(value) {
  console.log('onSelect', value);
}

function getRandomInt(max, min = 0) {
  return Math.floor(Math.random() * (max - min + 1)) + min; // eslint-disable-line no-mixed-operators
}

function searchResult(query) {
  return (new Array(getRandomInt(5))).join('.').split('.')
    .map((item, idx) => ({
      query,
      category: `${query}${idx}`,
      count: getRandomInt(200, 100),
    }));
}

function renderOption(item) {
  return (
    <Option key={item.category} text={item.category}>
      {item.query} 在
      <a
        href={`https://s.taobao.com/search?q=${item.query}`}
        target="_blank"
        rel="noopener noreferrer"
      >
        {item.category}
      </a>
      区块中
      <span className="global-search-item-count">约 {item.count} 个结果</span>
    </Option>
  );
}

class Complete extends React.Component {
  state = {
    dataSource: [],
  }

  handleSearch = (value) => {
    this.setState({
      dataSource: value ? searchResult(value) : [],
    });
  }

  render() {
    const { dataSource } = this.state;
    return (
      <div className="global-search-wrapper" style={{ width: 300 }}>
        <AutoComplete
          className="global-search"
          size="large"
          style={{ width: '100%' }}
          dataSource={dataSource.map(renderOption)}
          onSelect={onSelect}
          onSearch={this.handleSearch}
          placeholder="input here"
          optionLabelProp="text"
        >
          <Input
            suffix={(
              <Button className="search-btn" size="large" type="primary">
                <Icon type="search" />
              </Button>
            )}
          />
        </AutoComplete>
      </div>
    );
  }
}

ReactDOM.render(<Complete />, mountNode);
.global-search-wrapper {
  padding-right: 50px;
}

.global-search {
  width: 100%;
}

.global-search.ant-select-auto-complete .ant-select-selection--single {
  margin-right: -46px;
}

.global-search.ant-select-auto-complete .ant-input-affix-wrapper .ant-input:not(:last-child) {
  padding-right: 62px;
}

.global-search.ant-select-auto-complete .ant-input-affix-wrapper .ant-input-suffix {
  right: 0;
}

.global-search.ant-select-auto-complete .ant-input-affix-wrapper .ant-input-suffix button {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.global-search-item-count {
  position: absolute;
  right: 16px;
}

API#

const dataSource = ['12345', '23456', '34567'];
<AutoComplete dataSource={dataSource} />

参数	说明	类型	默认值
dataSource	自动完成的数据源	DataSourceItemType[]
value	指定当前选中的条目	string\|string[]\|{ key: string, label: string\|ReactNode }\|Array<{ key: string, label: string\|ReactNode }>	无
defaultValue	指定默认选中的条目	string\|string[]\|{ key: string, label: string\|ReactNode }\|Array<{ key: string, label: string\|ReactNode}>	无
allowClear	支持清除, 单选模式有效	boolean	false
onChange	选中 option，或 input 的 value 变化时，调用此函数	function(value)	无
onSelect	被选中时调用，参数为选中项的 value 值	function(value, option)	无
onSearch	搜索补全项的时候调用	function(value)	无
disabled	是否禁用	boolean	false
defaultActiveFirstOption	是否默认高亮第一个选项。	boolean	true
placeholder	输入框提示	string	-
children (自动完成的数据源)	自动完成的数据源	React.ReactElement / Array<React.ReactElement>	-
children (自定义输入框)	自定义输入框	HTMLInputElement / HTMLTextAreaElement / React.ReactElement	`<Input />`
optionLabelProp	回填到选择框的 Option 的属性值，默认是 Option 的子元素。比如在子元素需要高亮效果时，此值可以设为 `value`。	string	`children`
filterOption	是否根据输入项进行筛选。当其为一个函数时，会接收 `inputValue` `option` 两个参数，当 `option` 符合筛选条件时，应返回 `true`，反之则返回 `false`。	boolean or function(inputValue, option)	true
backfill	使用键盘选择选项的时候把选中项回填到输入框中	boolean	false

Components

AutoComplete自动完成

何时使用#

代码演示

API#