window.btoa is not supported in IE ?

Greenhorn

Posts: 17

posted 9 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

it complains - SCRIPT438: Object doesn't support property or method 'btoa'
here is the js i am trying to execute

i searched on internet and found i need to include base64.js or base64.min.js
above scripts i got from links
https://raw.github.com/davidchambers/Base64.js/master/base64.min.js
https://raw.github.com/davidchambers/Base64.js/master/base64.js
i included them in my code but again either i am getting same issue or i get blank screen ...
Please help me out

Albareto McKenzie

Ranch Hand

Posts: 312

posted 9 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Show us the code or create a little fiddle that shows the problem.

Bhawana Gupta

Greenhorn

Posts: 17

posted 9 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Albareto i am using this code piece in a javascript function, being called when a user clicks on some button on GUI:

this works absolutely fine with Chrome browser, but when i run same in IE ... nothing happens on button click and when i view browser console for errors i see :
SCRIPT438: Object doesn't support property or method 'btoa'
please let me know if further details required ...

Albareto McKenzie

Ranch Hand

Posts: 312

posted 9 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

If you don't want to show your code we cannot really help you, the only thing I can tell you is that this code works in IE:

So I don't know what you are doing wrong or why it does not work because the only thing you show is one line without any context of what you are including whatsoever.

Bhawana Gupta

Greenhorn

Posts: 17

posted 9 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Hi Albareto ... i didnt mean to hide my code.. (just new to this forum and learning to ask questions)
here is the dummy jsp file:

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Testing window btoa in IE</title>
<script
	src="https://rawgithub.com/davidchambers/Base64.js/master/base64.js"></script>
<script type="text/javascript">
	var tableToExcel = (function() {
		var uri = 'data:application/vnd.ms-excel;base64,';
		var template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head></head><body><table>{table}</table></body></html>';
		var base64 = function(s) {
			console.log(unescape(encodeURIComponent(s)));

return window.btoa(unescape(encodeURIComponent(s)));
		};
		var format = function(s, c) {
			return s.replace(/{(\w+)}/g, function(m, p) {
				return c[p];
			});
		};
		return function(table, name, filename) {
			if (!table.nodeType)
				table = document.getElementById(table);
			var ctx = {
				worksheet : name || 'Worksheet',
				table : table.innerHTML
			};
			document.getElementById("dlink").href = uri
					+ base64(format(template, ctx));
			console.log(document.getElementById("dlink").href);
			document.getElementById("dlink").download = filename;
			document.getElementById("dlink").click();

};
	})();
</script>

</head>
<body>

<div>
		<table>
			<tr>
				<td><a id="dlink"  rel="nofollow"></a></td>
			</tr>
		</table>
	</div>
	<div>
		<input type="button"
			onclick="tableToExcel('MainTable', 'sheet', 'myfile.xls')"
			value="Export to Excel hello">
	</div>
	
	<table id="MainTable">
		<tr>
		<th>Testing Row1 Column1</th>
		<th>Testing Row1 Column2</th>
		<th>Testing Row1 Column3</th>
		</tr>
		<tr>
		<td>Testing Row2 Column1</td>
		<td>Testing Row2 Column2</td>
		<td>Testing Row2 Column3</td>
		</tr>
		<tr>
		<td>Testing Row3 Column1</td>
		<td>Testing Row3 Column2</td>
		<td>Testing Row3 Column3</td>
		</tr>
	</table>

</body>
</html>

when i run on chrome and click button the file is getting downloaded. But on IE blank screen appears and nothing else happens

Albareto McKenzie

Ranch Hand

Posts: 312

posted 9 years ago