Calculated Column

In some conditions, the table origin columns only have basic data. If you want to add a new column that is calculated based on the other columns in the table, you can use a Calculated Column.

Open the demo in new window can open the designer You can add a calculated column into a table column with the following code:
window.onload = async () => { const loadingTip = addLoadingTip(); const { spread, designer } = createSpreadAndDesigner(); const res = await fetch('$DEMOROOT$/en/sample/features/report-sheet/data-settings/calculated-columns/spread.json'); await spread.fromJSON(correctTableUrl(await res.json())); loadingTip.remove(); if (designer) { designer.refresh(); } } function createSpreadAndDesigner() { const demoHost = document.getElementById('demo-host'); if (window !== top) { return { spread: new GC.Spread.Sheets.Workbook(demoHost, { sheetCount: 1 }), } } else { const designer = new GC.Spread.Sheets.Designer.Designer(demoHost, undefined, undefined, { sheetCount: 1 }); return { designer, spread: designer.getWorkbook(), } } } function addLoadingTip() { const div = document.createElement('div'); div.style.position = 'absolute'; div.style.inset = '0'; div.style.display = 'flex'; div.style.alignItems = 'center'; div.style.justifyContent = 'center'; div.style.background = 'white'; div.style.zIndex = '100'; div.textContent = 'Loading data from server ...'; document.body.appendChild(div); return div; } function correctTableUrl(json) { const baseUrl = '$DEMOROOT$'; const localUrl = 'http://localhost:8070/spreadjs/demos'; const replaceUrl = (obj) => { if (obj && obj.url && obj.url.startsWith(localUrl)) { obj.url = obj.url.replace(localUrl, baseUrl); } } if (json.dataManager && json.dataManager.tables) { json.dataManager.tables.forEach((table) => { if (table.dataSourceOption && table.dataSourceOption.remote) { Object.values(table.dataSourceOption.remote).forEach(replaceUrl); } }); } return json; }
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