<!DOCTYPE html>
<html>
<head>
<title>SheetJS Demo</title>
<meta charset="UTF-8" />
<script src="https://oss.sheetjs.com/sheetjs/xlsx.full.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="module" src="/app.min.js"></script>
</body>
</html>
let excelButton = document.getElementById("button-excel");
excelButton.addEventListener("click", () => {
let now = new Date();
let timestamp = `${now.toISOString().split("T")[0]} ${now.toLocaleTimeString("en-GB")}`; // 2020-04-18 14_03_05
activitiesTable.download("xlsx", `Exel report - ${timestamp}.xlsx`);
});