xsheetjs/demos/nwjs/README.md

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# NW.js
This library is compatible with NW.js and should just work out of the box.
The demonstration uses NW.js 0.24 with the dist script.
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## Reading data
The standard HTML5 `FileReader` techniques from the browser apply to NW.js!
This demo includes a drag-and-drop box as well as a file input box, mirroring
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the [SheetJS Data Preview Live Demo](https://oss.sheetjs.com/sheetjs/).
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## Writing data
File input elements with the attribute `nwsaveas` show UI for saving a file. The
standard trick is to generate a hidden file input DOM element and "click" it.
Since NW.js does not present a `writeFileSync` in the `fs` package, a manual
step is required:
```js
/* from within the input change callback, `this.value` is the file name */
var filename = this.value, bookType = (filename.match(/[^\.]*$/)||["xlsx"])[0];
/* convert the TABLE element back to a workbook */
var wb = XLSX.utils.table_to_book(HTMLOUT);
/* write to buffer */
var wbout = XLSX.write(wb, {type:'buffer', bookType:bookType});
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/* use the async fs.writeFile to save the data */
fs.writeFile(filename, wbout, function(err) {
if(!err) return alert("Saved to " + filename);
alert("Error: " + (err.message || err));
});
```
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