docs.sheetjs.com/docz/static/dojo/write.html

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<!DOCTYPE html>
<html>
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<head>
<meta name="robots" content="noindex">
<title>SheetJS + Dojo Write Demo</title>
</head>
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<body>
<h1>SheetJS + Dojo Write Demo</h1>
(this HTML page is not minified -- feel free to view source!)<br/><br/>
<a href="https://docs.sheetjs.com">SheetJS CE Documentation</a>
<script>
dojoConfig = { packages: [
{ name: "xlsx", location: "https://cdn.sheetjs.com/xlsx-latest/package/dist", main: "xlsx.full.min" }
] };
</script>
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<script src="dojo.js" data-dojo-config="isDebug:1, async:1"></script>
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<script>
require(["dojo/request/xhr", "xlsx"], function(xhr, _XLSX) {
xhr("https://sheetjs.com/data/executive.json", {
headers: { "X-Requested-With": null },
handleAs: "json"
}).then(function(raw_data) {
/* filter for the Presidents */
var prez = raw_data.filter(function(row) {
return row.terms.some(function(term) { return term.type === "prez"; });
});
/* flatten objects */
var rows = prez.map(function(row) { return ({
name: row.name.first + " " + row.name.last,
birthday: row.bio.birthday
}); });
/* generate worksheet and workbook */
var worksheet = XLSX.utils.json_to_sheet(rows);
var workbook = XLSX.utils.book_new();
XLSX.utils.book_append_sheet(workbook, worksheet, "Dates");
/* fix headers */
XLSX.utils.sheet_add_aoa(worksheet, [["Name", "Birthday"]], { origin: "A1" });
/* calculate column width */
var max_width = rows.reduce(function(w, r) { return Math.max(w, r.name.length); }, 10);
worksheet["!cols"] = [ { wch: max_width } ];
/* create an XLSX file and try to save to Presidents.xlsx */
XLSX.writeFile(workbook, "Presidents.xlsx");
});
});
</script>
</body>
</html>