sheetjs/demos/xhr/fetch.html

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<!DOCTYPE html>
<!-- xlsx.js (C) 2013-present SheetJS http://sheetjs.com -->
<!-- vim: set ts=2: -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>SheetJS Live Demo</title>
<style>
a { text-decoration: none }
</style>
</head>
<body>
<pre>
<b><a href="http://sheetjs.com">SheetJS Data Preview Live Demo</a></b>
<a href="https://github.com/SheetJS/js-xlsx">Source Code Repo</a>
<a href="https://github.com/SheetJS/js-xlsx/issues">Issues? Something look weird? Click here and report an issue</a>
<br/><div id="fileurl"></div>
</pre>
<div id="htmlout"></div>
<br />
<button id="ulbutton">Click here to upload the modified table</button>
<pre>
<div id="outfile"></div>
</pre>
<script src="xlsx.full.min.js"></script>
<script>
var demo = 'fetch', book = 'xlsx';
if(!window.fetch)
throw new Error("This demo is not supported in your browser");
function process_wb(wb) {
console.log(wb);
htmlout.innerHTML = XLSX.utils.sheet_to_html(wb.Sheets[wb.SheetNames[0]], {editable:true}).replace("<table", '<table id="table" border="1"');
}
var url = "sheetjs.xlsx";
document.getElementById('fileurl').innerHTML = '<a href="' + url + '">Download original file</a>';
document.getElementById('outfile').innerHTML = '<a href="' + demo + '.' + book + '">Download new file</a>';
fetch(url).then(function(res) {
if(!res.ok) throw new Error("fetch failed");
return res.blob();
}).then(function(blob) {
var reader = new FileReader();
reader.addEventListener("loadend", function() {
var data = new Uint8Array(this.result);
var wb = XLSX.read(data, {type:"array"});
process_wb(wb);
});
reader.readAsArrayBuffer(blob);
});
document.getElementById('ulbutton').onclick = function() {
var wb = XLSX.utils.table_to_book(document.getElementById('htmlout'));
console.log(wb);
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var fd = new FormData();
var data = XLSX.write(wb, {bookType:book, type:'array'});
console.log(data);
fd.append('data', new File([data], demo + '.' + book));
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fetch("/upload", {method: "POST", body: fd}).then(function(r) { return r.text(); }).then(function(t) { console.log(t); });
};
</script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-36810333-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</body>
</html>