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JavaScript Date samples

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These samples show how to use the JavaScript Date object.

Write the current date and time

The following sample gets the current date and time and then writes those values to two cells in the active worksheet.

function main(workbook: ExcelScript.Workbook) {
  // Get the cells at A1 and B1.
  let dateRange = workbook.getActiveWorksheet().getRange("A1");
  let timeRange = workbook.getActiveWorksheet().getRange("B1");

  // Get the current date and time with the JavaScript Date object.
  let date = new Date(Date.now());

  // Add the date string to A1.
  dateRange.setValue(date.toLocaleDateString());

  // Add the time string to B1.
  timeRange.setValue(date.toLocaleTimeString());
}

Read an Excel date

This sample reads a date that's stored in Excel and translates it to a JavaScript Date object. It uses the date's numeric serial number as input for the JavaScript Date. This serial number is described in the NOW() function article.

function main(workbook: ExcelScript.Workbook) {
  // Read a date at cell A1 from Excel.
  let dateRange = workbook.getActiveWorksheet().getRange("A1");

  // Convert the Excel date to a JavaScript Date object.
  let excelDateValue = dateRange.getValue() as number;
  let javaScriptDate = new Date(Math.round((excelDateValue - 25569) * 86400 * 1000));
  console.log(javaScriptDate);
}

See also