Custom Function

Although the functions provided in FlexSheet should cover a vast majority of use scenarios, there may be some cases where users may need a custom function. FlexSheet provides two methods that allow you to add your own custom functions: addFunction and unknownFunction.

Learn about FlexSheet | Custom Functions Documentation | FlexSheet API Reference

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import * as wjFlexSheet from '@mescius/wijmo.grid.sheet'; // document.readyState === 'complete' ? init() : window.onload = init; // function init() { let customFuncSheet = new wjFlexSheet.FlexSheet('#customFuncSheet'); customFuncSheet.addUnboundSheet('Custom Function', 20, 10); customFuncSheet.addUnboundSheet('Data', 20, 10); customFuncSheet.addFunction('customSumProduct', (...params) => { let result = 0, range1 = params[0], range2 = params[1]; if (range1.length > 0 && range1.length === range2.length && range1[0].length === range2[0].length) { for (let i = 0; i < range1.length; i++) { for (let j = 0; j < range1[0].length; j++) { result += range1[i][j] * range2[i][j]; } } } return result; }, 'Custom SumProduct Function', 2, 2); customFuncSheet.unknownFunction.addHandler((sender, e) => { let result = ''; if (e.params) { for (let i = 0; i < e.params.length; i++) { result += e.params[i]; } } e.value = result; }); customFuncSheet.deferUpdate(() => { for (let i = customFuncSheet.sheets.length - 1; i >= 0; i--) { customFuncSheet.sheets.selectedIndex = i; switch (customFuncSheet.sheets[i].name) { case 'Custom Function': customFuncSheet.setCellData(0, 0, '=customSumProduct(Data!A1:B5, Data!B1:C5)'); customFuncSheet.setCellData(1, 0, '=customFunc(1, "B", 3)'); break; case 'Data': for (let ri = 0; ri < customFuncSheet.rows.length; ri++) { for (let ci = 0; ci < 3; ci++) { customFuncSheet.setCellData(ri, ci, ri + ci); } } break; } } }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexSheet Custom Function</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.5/dist/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="customFuncSheet"></div> </div> </body> </html>
.wj-flexsheet { height: 400px; margin: 6px 0; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true, }, meta: { '*.css': { loader: 'css' }, }, paths: { // paths serve as alias 'npm:': 'node_modules/', 'cdn:': 'https://cdn.mescius.io/demoapps/packages/wijmojs/5.20261.50-rc/', 'pcdn:': 'https://cdn.jsdelivr.net/npm/' }, // map tells the System loader where to look for things map: { '@mescius/wijmo': 'cdn:@mescius/wijmo/index.js', '@mescius/wijmo.input': 'cdn:@mescius/wijmo.input/index.js', '@mescius/wijmo.styles': 'cdn:@mescius/wijmo.styles', '@mescius/wijmo.cultures': 'cdn:@mescius/wijmo.cultures', '@mescius/wijmo.chart': 'cdn:@mescius/wijmo.chart/index.js', '@mescius/wijmo.chart.analytics': 'cdn:@mescius/wijmo.chart.analytics/index.js', '@mescius/wijmo.chart.animation': 'cdn:@mescius/wijmo.chart.animation/index.js', '@mescius/wijmo.chart.annotation': 'cdn:@mescius/wijmo.chart.annotation/index.js', '@mescius/wijmo.chart.finance': 'cdn:@mescius/wijmo.chart.finance/index.js', '@mescius/wijmo.chart.finance.analytics': 'cdn:@mescius/wijmo.chart.finance.analytics/index.js', '@mescius/wijmo.chart.hierarchical': 'cdn:@mescius/wijmo.chart.hierarchical/index.js', '@mescius/wijmo.chart.interaction': 'cdn:@mescius/wijmo.chart.interaction/index.js', '@mescius/wijmo.chart.radar': 'cdn:@mescius/wijmo.chart.radar/index.js', '@mescius/wijmo.chart.render': 'cdn:@mescius/wijmo.chart.render/index.js', '@mescius/wijmo.chart.webgl': 'cdn:@mescius/wijmo.chart.webgl/index.js', '@mescius/wijmo.chart.map': 'cdn:@mescius/wijmo.chart.map/index.js', '@mescius/wijmo.gauge': 'cdn:@mescius/wijmo.gauge/index.js', '@mescius/wijmo.grid': 'cdn:@mescius/wijmo.grid/index.js', '@mescius/wijmo.grid.detail': 'cdn:@mescius/wijmo.grid.detail/index.js', '@mescius/wijmo.grid.filter': 'cdn:@mescius/wijmo.grid.filter/index.js', '@mescius/wijmo.grid.search': 'cdn:@mescius/wijmo.grid.search/index.js', '@mescius/wijmo.grid.style': 'cdn:@mescius/wijmo.grid.style/index.js', '@mescius/wijmo.grid.grouppanel': 'cdn:@mescius/wijmo.grid.grouppanel/index.js', '@mescius/wijmo.grid.multirow': 'cdn:@mescius/wijmo.grid.multirow/index.js', '@mescius/wijmo.grid.transposed': 'cdn:@mescius/wijmo.grid.transposed/index.js', '@mescius/wijmo.grid.transposedmultirow': 'cdn:@mescius/wijmo.grid.transposedmultirow/index.js', '@mescius/wijmo.grid.pdf': 'cdn:@mescius/wijmo.grid.pdf/index.js', '@mescius/wijmo.grid.sheet': 'cdn:@mescius/wijmo.grid.sheet/index.js', '@mescius/wijmo.grid.xlsx': 'cdn:@mescius/wijmo.grid.xlsx/index.js', '@mescius/wijmo.grid.selector': 'cdn:@mescius/wijmo.grid.selector/index.js', '@mescius/wijmo.grid.cellmaker': 'cdn:@mescius/wijmo.grid.cellmaker/index.js', '@mescius/wijmo.nav': 'cdn:@mescius/wijmo.nav/index.js', '@mescius/wijmo.odata': 'cdn:@mescius/wijmo.odata/index.js', '@mescius/wijmo.olap': 'cdn:@mescius/wijmo.olap/index.js', '@mescius/wijmo.rest': 'cdn:@mescius/wijmo.rest/index.js', '@mescius/wijmo.pdf': 'cdn:@mescius/wijmo.pdf/index.js', '@mescius/wijmo.pdf.security': 'cdn:@mescius/wijmo.pdf.security/index.js', '@mescius/wijmo.viewer': 'cdn:@mescius/wijmo.viewer/index.js', '@mescius/wijmo.xlsx': 'cdn:@mescius/wijmo.xlsx/index.js', '@mescius/wijmo.undo': 'cdn:@mescius/wijmo.undo/index.js', '@mescius/wijmo.interop.grid': 'cdn:@mescius/wijmo.interop.grid/index.js', '@mescius/wijmo.touch': 'cdn:@mescius/wijmo.touch/index.js', '@mescius/wijmo.cloud': 'cdn:@mescius/wijmo.cloud/index.js', '@mescius/wijmo.barcode': 'cdn:@mescius/wijmo.barcode/index.js', '@mescius/wijmo.barcode.common': 'cdn:@mescius/wijmo.barcode.common/index.js', '@mescius/wijmo.barcode.composite': 'cdn:@mescius/wijmo.barcode.composite/index.js', '@mescius/wijmo.barcode.specialized': 'cdn:@mescius/wijmo.barcode.specialized/index.js', jszip: 'pcdn:jszip@3.8.0/dist/jszip.js', 'bootstrap.css': 'pcdn:bootstrap@3.3.7/dist/css/bootstrap.min.css', css: 'pcdn:systemjs-plugin-css@0.1.37/css.js', 'plugin-babel': 'pcdn:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'pcdn:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'js', }, node_modules: { defaultExtension: 'js', }, }, }); })(this);