此時在選擇框中選擇一個選項時，其余選項將變?yōu)槎鄠€值。我怎樣才能防止這種重復(fù)值？import Select from 'react-select';const dataOptions = []; class App extends React.Component {    constructor(props) {        super(props);        this.data = [];        this.getData();    }    getData = () => { api.request({url: `/getdata`}).then(res => res.map(el => this.data[el.id] = el.name)) }    addData = () => {        const { selectedId } = this.state;        var datas = this.data;        console.log(datas);        datas.map((name, index) => {            if (!dataOptions.includes(name)) {                console.log('b4 push:', dataOptions)                dataOptions.push({ value: index, label: name });                console.log('aftr push:', dataOptions)            }        });        return (            <Select options={dataOptions}            isMulti            />        );    }}此語法中發(fā)生了一些錯誤：datas.map((name, index) => {  if (!dataOptions.includes(name)) {       dataOptions.push({ value: index, label: name });  }}); 控制臺結(jié)果[ "data-1", "data-2", "data-3"]b4 push: [  {value: 1, label: "data-1"}  {value: 2, label: "data-2"}  {value: 3, label: "data-3"}]aftr push: [  {value: 1, label: "data-1"}  {value: 2, label: "data-2"}  {value: 3, label: "data-3"}]PS：在后推我已經(jīng)從下拉菜單中選擇了第一個選項；所以結(jié)果 if 不應(yīng)該顯示在數(shù)組值中。提前致謝...！