ant-design/components/auto-complete/demo/certain-category.md

---
order: 4
title:
  zh-CN: 查询模式 - 确定类目
  en-US: Lookup-Patterns - Certain Category
---

## zh-CN

[查询模式: 确定类目](https://ant.design/docs/spec/reaction#Lookup-Patterns) 示例。

## en-US

Demonstration of [Lookup Patterns: Certain Category](https://ant.design/docs/spec/reaction#Lookup-Patterns). Basic Usage, set datasource of autocomplete with `dataSource` property.

```jsx
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);
```

```css
.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;
}
```