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SheetJS 2022-08-09 00:23:52 -04:00
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@ -18,6 +18,159 @@ The ["Standalone Browser Scripts"](../../installation/standalone) section has
instructions for obtaining or referencing the standalone scripts. These are
designed to be referenced with `<script>` tags.
## Internet Explorer
Internet Explorer is unmaintained and users should consider modern browsers.
The SheetJS testing grid still includes IE and should work.
The modern upload and download strategies are not available in older versions of
IE, but there are approaches using older technologies like ActiveX and Flash.
<details><summary><b>Complete Example</b> (click to show)</summary>
This demo includes all of the support files for the Flash and ActiveX methods.
1) Download the standalone script and shim to a server that will host the demo:
<li><a href={``}>xlsx.full.min.js</a></li>
<li><a href={``}>shim.min.js</a></li>
2) [Download the demo ZIP](pathname:///ie/ to the server.
The ZIP includes the demo HTML file as well as the Downloadify support files.
Extract the contents to the same folder as the scripts from step 1
3) Start a HTTP server:
npx -y http-server .
4) Access the `index.html` from a machine with Internet Explorer.
<details><summary><b>Other Live Demos</b> (click to show)</summary>
The hosted solutions may not work in older versions of Windows. For testing,
demo pages should be downloaded and hosted using a simple HTTP server.
<> uses XMLHttpRequest to download test
files and convert to CSV.
<> demonstrates reading files with `FileReader`.
Older versions of IE do not support HTML5 File API but do support Base64.
On OSX you can get the Base64 encoding with:
$ <target_file base64 | pbcopy
On Windows XP and up you can get the Base64 encoding using `certutil`:
> certutil -encode target_file target_file.b64
(note: You have to open the file and remove the header and footer lines)
### Upload Strategies
IE10 and IE11 support the standard HTML5 FileReader API:
function handle_fr(e) {
var f =[0];
var reader = new FileReader();
reader.onload = function(e) {
var wb =;
process_wb(wb); // DO SOMETHING WITH wb HERE
input_dom_element.addEventListener('change', handle_fr, false);
`Blob#arrayBuffer` is not supported in IE!
**ActiveX-based Upload**
Through the `Scripting.FileSystemObject` object model, a script in the VBScript
scripting language can read from an arbitrary path on the filesystem. The shim
includes a special `IE_LoadFile` function to read binary strings from file. This
should be called from a file input `onchange` event:
var input_dom_element = document.getElementById("file");
function handle_ie() {
/* get data from selected file */
var path = input_dom_element.value;
var bstr = IE_LoadFile(path);
/* read workbook */
var wb =, {type: 'binary'});
input_dom_element.attachEvent('onchange', handle_ie);
### Download Strategies
As part of the File API implementation, IE10 and IE11 provide the `msSaveBlob`
and `msSaveOrOpenBlob` functions to save blobs to the client computer. This
approach is embedded in `XLSX.writeFile` and no additional shims are necessary.
**Flash-based Download**
It is possible to write to the file system using a SWF. `Downloadify` library
implements one solution. Since a genuine click is required, there is no way to
force a download. The safest data type is Base64:
// highlight-next-line
Downloadify.create(element_id, {
/* Downloadify boilerplate */
swf: 'downloadify.swf',
downloadImage: 'download.png',
width: 100, height: 30,
transparent: false, append: false,
// highlight-start
/* Key parameters */
filename: "test.xlsx",
dataType: 'base64',
data: function() { return XLSX.write(wb, { bookType: "xlsx", type: 'base64' }); }
// highlight-end
// highlight-next-line
**ActiveX-based Download**
Through the `Scripting.FileSystemObject` object model, a script in the VBScript
scripting language can write to an arbitrary path on the filesystem. The shim
includes a special `IE_SaveFile` function to write binary strings to file. It
attempts to write to the Downloads folder or Documents folder or Desktop.
This approach can be triggered, but it requires the user to enable ActiveX. It
is embedded as a strategy in `writeFile` and used only if the shim script is
included in the page and the relevant features are enabled on the target system.
## Frameworks
### AngularJS

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