---
order: 7
zh-CN:
	title: 异步搜索
	zj: 浙江省
	hz: 杭州市
	xh: 西湖区
	yh: 余杭区
	wz: 温州市
	lw: 龙湾区
	xj: 新疆维吾尔自治区
	be: 博尔塔拉蒙古自治州
	al: 阿拉山口市
en-US:
	title: Async Searchable Usage
	zj: Zhejiang
	hz: Hangzhou
	xh: Xihu
	yh: YuHang
	wz: Wenzhou
	lw: Longwan
	xj: Xinjiang
	be: Bortala
	al: Alashankou
---

```js
import { MenuCascader } from 'zent';
import { clone, insertPath } from 'zent/es/cascader/public-options-fns';

class Simple extends React.Component {
	state = {
		value: [],
		options: [
			{
				value: '330000',
				label: '{i18n.zj}',
				children: [
					{
						value: '330100',
						label: '{i18n.hz}',
						children: [
							{
								value: '330106',
								label: '{i18n.xh}',
							},
							{
								value: '330107',
								label: '{i18n.yh}',
							},
						],
					},
					{
						value: '330200',
						label: '{i18n.wz}',
						children: [
							{
								value: '330206',
								label: '{i18n.lw}',
								disabled: true,
							},
						],
					},
				],
			},
			{
				value: '120000',
				label: '{i18n.xj}',
				children: [
					{
						value: '120100',
						label: '{i18n.be}',
						children: [
							{
								value: '120111',
								label: '{i18n.al}',
							},
						],
					},
				],
			},
		],
	};

	onChange = (value, selectedOptions, meta) => {
		console.log(value, selectedOptions, meta);
		this.setState({
			value,
		});
	};

	asyncFilter = keyword =>
		new Promise((resolve, reject) => {
			setTimeout(() => {
				const searchList = [
					[
						{ value: '330000', label: '浙江省' },
						{ value: '330100', label: '杭州市' },
						{ value: '330101', label: `${keyword}-1` },
					],
					[
						{ value: '330000', label: '浙江省' },
						{ value: '330200', label: '温州市' },
						{ value: '330201', label: `${keyword}-2` },
					],
				];

				// insert into options if missing
				const options = clone(this.state.options);
				searchList.forEach(path => insertPath(options, path));

				this.setState({
					options,
				});

				resolve(searchList);
			}, 500);
		});

	render() {
		return (
			<MenuCascader
				value={this.state.value}
				options={this.state.options}
				onChange={this.onChange}
				expandTrigger="hover"
				asyncFilter={this.asyncFilter}
				clearable
				searchable
				async
				multiple
			/>
		);
	}
}

ReactDOM.render(<Simple />, mountNode);
```