28 lines
957 B
TypeScript
28 lines
957 B
TypeScript
import {Observable, of} from 'rxjs';
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import {PageList} from '../class/HttpReqAndResp';
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/**
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* 判断 一个Page<any>[] 中是否存在一条已查询的数据
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*
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* @param pageNum 页码
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* @param pageSize 单页数量
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* @param pageList 源数据
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* @return 未查到：null 查到：该条数据
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*/
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export function exist<T>(pageNum: number, pageSize: number, pageList: PageList<any>[]): Observable<PageList<T>> | null {
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if (pageList === undefined || pageList == null || pageList.length === 0) {
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return null;
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}
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// eslint-disable-next-line @typescript-eslint/prefer-for-of
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for (let i = 0; i < pageList.length; i++) {
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// eslint-disable-next-line eqeqeq
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if (pageList[i].pageNum == pageNum && pageList[i].pageSize == pageSize) {
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const ob: Observable<PageList<T>> = new Observable(o => {
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o.next(pageList[i]);
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o.complete();
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});
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}
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}
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return null;
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}
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