import React, { useState } from 'react';
import { AutoComplete } from 'antd';

const mockVal = (str: string, repeat: number = 1) => {
  return {
    value: str.repeat(repeat),
  };
};
const Complete: React.FC = () => {
  const [value, setValue] = useState('');
  const [options, setOptions] = useState<{ value: string }[]>([]);
  const onSearch = (searchText: string) => {
    setOptions(
      !searchText ? [] : [mockVal(searchText), mockVal(searchText, 2), mockVal(searchText, 3)],
    );
  };
  const onSelect = (data: string) => {
    console.log('onSelect', data);
  };
  const onChange = (data: string) => {
    setValue(data);
  };
  return (
    <div>
      <AutoComplete
        options={options}
        style={{ width: 200 }}
        onSelect={onSelect}
        onSearch={onSearch}
        placeholder="input here"
      />
      <br />
      <br />
      <AutoComplete
        value={value}
        options={options}
        style={{ width: 200 }}
        onSelect={onSelect}
        onSearch={onSearch}
        onChange={onChange}
        placeholder="control mode"
      />
    </div>
  );
};

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

import React, { useState } from 'react';
import { AutoComplete, Input } from 'antd';

const { TextArea } = Input;

const Complete: React.FC = () => {
  const [options, setOptions] = useState<{ value: string }[]>([]);
  const handleSearch = (value: string) => {
    setOptions(
      !value ? [] : [{ value }, { value: value + value }, { value: value + value + value }],
    );
  };

  const handleKeyPress = (ev: React.KeyboardEvent<HTMLTextAreaElement>) => {
    console.log('handleKeyPress', ev);
  };

  const onSelect = (value: string) => {
    console.log('onSelect', value);
  };

  return (
    <AutoComplete
      options={options}
      style={{ width: 200 }}
      onSelect={onSelect}
      onSearch={handleSearch}
    >
      <TextArea
        placeholder="input here"
        className="custom"
        style={{ height: 50 }}
        onKeyPress={handleKeyPress}
      />
    </AutoComplete>
  );
};

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

import { Input, AutoComplete } from 'antd';
import { UserOutlined } from '@ant-design/icons';

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

const renderItem = (title: string, count: number) => {
  return {
    value: title,
    label: (
      <div
        style={{
          display: 'flex',
          justifyContent: 'space-between',
        }}
      >
        {title}
        <span>
          <UserOutlined /> {count}
        </span>
      </div>
    ),
  };
};

const options = [
  {
    label: renderTitle('Libraries'),
    options: [renderItem('AntDesign', 10000), renderItem('AntDesign UI', 10600)],
  },
  {
    label: renderTitle('Solutions'),
    options: [renderItem('AntDesign UI FAQ', 60100), renderItem('AntDesign FAQ', 30010)],
  },
  {
    label: renderTitle('Articles'),
    options: [renderItem('AntDesign design language', 100000)],
  },
];

const Complete: React.FC = () => {
  return (
    <AutoComplete
      dropdownClassName="certain-category-search-dropdown"
      dropdownMatchSelectWidth={500}
      style={{ width: 250 }}
      options={options}
    >
      <Input.Search size="large" placeholder="input here" />
    </AutoComplete>
  );
};

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

import React, { useState } from 'react';
import { AutoComplete } from 'antd';

const { Option } = AutoComplete;

const Complete: React.FC = () => {
  const [result, setResult] = useState<string[]>([]);
  const handleSearch = (value: string) => {
    let res: string[] = [];
    if (!value || value.indexOf('@') >= 0) {
      res = [];
    } else {
      res = ['gmail.com', '163.com', 'qq.com'].map(domain => `${value}@${domain}`);
    }
    setResult(res);
  };
  const children = result.map((email: string) => (
    <Option key={email} value={email}>
      {email}
    </Option>
  ));
  return (
    <AutoComplete style={{ width: 200 }} onSearch={handleSearch} placeholder="input here">
      {children}
    </AutoComplete>
  );
};

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

import { AutoComplete } from 'antd';

const options = [
  { value: 'Burns Bay Road' },
  { value: 'Downing Street' },
  { value: 'Wall Street' },
];

const Complete: React.FC = () => {
  return (
    <AutoComplete
      style={{ width: 200 }}
      options={options}
      placeholder="try to type `b`"
      filterOption={(inputValue, option) =>
        option.value.toUpperCase().indexOf(inputValue.toUpperCase()) !== -1
      }
    />
  );
}

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

import React, { useState } from 'react';
import { Input, AutoComplete } from 'antd';
import { SelectProps } from 'antd/es/select';

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

const searchResult = (query: string) => {
  return new Array(getRandomInt(5))
    .join('.')
    .split('.')
    .map((item, idx) => {
      const category = `${query}${idx}`;
      return {
        value: category,
        label: (
          <div
            style={{
              display: 'flex',
              justifyContent: 'space-between',
            }}
          >
            <span>
              Found {query} on{' '}
              <a
                href={`https://s.taobao.com/search?q=${query}`}
                target="_blank"
                rel="noopener noreferrer"
              >
                {category}
              </a>
            </span>
            <span>{getRandomInt(200, 100)} results</span>
          </div>
        ),
      };
    });
};

const Complete: React.FC = () => {
  const [options, setOptions] = useState<SelectProps<object>['options']>([]);

  const handleSearch = (value: string) => {
    setOptions(value ? searchResult(value) : []);
  };

  const onSelect = (value: string) => {
    console.log('onSelect', value);
  };

  return (
    <AutoComplete
      dropdownMatchSelectWidth={252}
      style={{ width: 300 }}
      options={options}
      onSelect={onSelect}
      onSearch={handleSearch}
    >
      <Input.Search size="large" placeholder="input here" enterButton />
    </AutoComplete>
  );
};

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