Created
March 17, 2017 16:25
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test.js
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| const SelectProvince = ({ provinces, value, onChange }) => ( | |
| <select value={value} onChange={onChange}> | |
| {provinces.map((pro, index) => { | |
| return ( | |
| <option value={pro} key={index}> | |
| {pro} | |
| </option> | |
| ); | |
| })} | |
| </select> | |
| ); | |
| const SelectCity = ({ cities, value, onChange }) => ( | |
| <select value={value} onChange={onChange}> | |
| {cities.map((city, index) => { | |
| return ( | |
| <option value={city} key={index}> | |
| {city} | |
| </option> | |
| ); | |
| })} | |
| </select> | |
| ); | |
| class AwesomeSelect extends React.Component { | |
| constructor(props) { | |
| super(props); | |
| this.state = { | |
| provinceValue: this.props.data.province[0], | |
| cityValue: this.props.data[this.props.data.province[0]][0], | |
| cities: this.props.data[this.props.data.province[0]] | |
| }; | |
| } | |
| render() { | |
| return ( | |
| <div> | |
| <lable> 省 </lable> | |
| <SelectProvince | |
| provinces={this.props.data.province} | |
| value={this.state.provinceValue} | |
| onChange={e => { | |
| this.setState({ | |
| provinceValue: e.target.value, | |
| cityValue: this.props.data[e.target.value][0], | |
| cities: this.props.data[e.target.value] | |
| }); | |
| }} | |
| /> | |
| <lable> 城市 </lable> | |
| <SelectCity | |
| cities={this.state.cities} | |
| value={this.state.cityValue} | |
| onChange={e => { | |
| this.setState({ cityValue: e.target.value }); | |
| }} | |
| /> | |
| {this.state.provinceValue} ---- {this.state.cityValue} | |
| </div> | |
| ); | |
| } | |
| } | |
| const data = { | |
| on: ["toronto", "markham", "kingston"], | |
| bc: ["richmond", "vancouver", "trail"], | |
| ab: ["edmonton", "leduc"], | |
| province: ["on", "bc", "ab"] | |
| }; | |
| ReactDOM.render(<AwesomeSelect data={data} />, document.getElementById("root")); |
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