JSON 날짜 로드

JSON은 날짜를 완벽하게 지원하지 않으므로 서버에서 데이터를 로드할 때 서식을 지정해야 할 수 있습니다. 이 샘플은 '서식 지정' 이전과 이후의 FlexGrid 날짜 표시를 보여 줍니다. JSON.parse 메서드를 사용하여 날짜처럼 보이는 문자열을 Date 객체로 전환합니다.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import * as grid from '@grapecity/wijmo.grid'; import { getData } from './data'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { // Start with some data encoded as JSON (as it would arrive from a server) let json = getData(); // // Decode the data // No special parsing for dates, the date field will contain strings let dataBad = JSON.parse(json); // // Show the bad data in a grid let theGridBad = new grid.FlexGrid('#theGridBad', { itemsSource: dataBad }); // // Decode the data // Use with a Date reviver to restore date fields let dataGood = JSON.parse(json, (key, value) => { if (typeof value === 'string') { // Parse dates saved as JSON-strings let m = value.match(/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/); if (m) { return new Date(Date.UTC(+m[1], +m[2] - 1, +m[3], +m[4], +m[5], +m[6])); } // // Parse dates saved as OData-style strings m = value.match(/^\/Date\((\d+)\)$/); if (m) { return new Date(parseInt(m[1])); } } return value; }); // // Show the good data in a grid let theGridGood = new grid.FlexGrid('#theGridGood', { itemsSource: dataGood }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Loading JSON Dates</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <p> Here's an example: note how the "Date" column contains strings: </p> <div id="theGridBad"></div> <p> Here is a grid showing the same data, this time parsed with a date reviver function: </p> <div id="theGridGood"></div> </div> </body> </html>
export function getData() { let json = '[' + '{"id":0,"country":"US","sales":489.51,"expenses":2358.24,"date":"2017-02-08T12:47:06.405Z"},' + '{"id":1,"country":"Germany","sales":7803.20,"expenses":2513.54,"date":"2017-02-09T12:47:06.405Z"},' + '{"id":2,"country":"UK","sales":9996.58,"expenses":2616.71,"date":"2017-02-10T12:47:06.405Z"},' + '{"id":3,"country":"Japan","sales":9351.68,"expenses":3030.59,"date":"2017-02-10T12:47:06.405Z"},' + '{"id":4,"country":"Spain","sales":349.51,"expenses":7358.24,"date":"/Date(1486561758556)"}' + ']'; // return json; }
.wj-flexgrid { max-height: 250px; } body { margin-bottom: 36pt; }
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