<!DOCTYPE html>
<!-- sheetjs (C) 2013-present SheetJS http://sheetjs.com -->
<!-- vim: set ts=2: -->
<html lang="en" style="height: 100%">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>SheetJS React Demo</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<script src="https://unpkg.com/react/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom/umd/react-dom.production.min.js"></script>
<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/shim.min.js"></script>
<script src="https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js"></script>
<style>body, #app { height: 100%; }</style>
</head>
<body>
<div class="container-fluid"><h1><a href="http://sheetjs.com">SheetJS × React Demo</a></h1><br /></div>
<div id="app" class="container-fluid"></div>
<script type="text/babel">
/* sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
/* Notes:
- usage: `ReactDOM.render( <SheetJSApp />, document.getElementById('app') );`
- xlsx.full.min.js is loaded in the head of the HTML page
- this script should be referenced with type="text/babel"
- babel.js in-browser transpiler should be loaded before this script
*/
const { read, writeFile } = XLSX;
const { decode_range, encode_col, sheet_to_json, aoa_to_sheet, book_new, book_append_sheet } = XLSX.utils;
/* generate an array of column objects */
const make_cols = refstr => Array.from({length: decode_range(refstr).e.c + 1}, (_, i) => ({ name: encode_col(i), key: i}));
/* main component */
function SheetJSApp() {
const [data, setData] = React.useState([]);
const [cols, setCols] = React.useState([]);
const handleFile = (file) => {
const reader = new FileReader();
reader.onload = (e) => {
/* Parse data */
const ab = e.target.result;
const wb = read(ab, { type: 'array' });
/* Get first worksheet */
const wsname = wb.SheetNames[0];
const ws = wb.Sheets[wsname];
/* Convert array of arrays */
const data = sheet_to_json(ws, { header: 1 });
/* Update state */
setData(data);
setCols(make_cols(ws['!ref']))
};
reader.readAsArrayBuffer(file);
}
const exportFile = () => {
/* convert state to workbook */
const ws = aoa_to_sheet(data);
const wb = book_new();
book_append_sheet(wb, ws, "SheetJS");
/* generate XLSX file and send to client */
writeFile(wb, "sheetjs.xlsx")
};
return (
<DragDropFile handleFile={handleFile}>
<div className="row"><div className="col-xs-12">
<DataInput handleFile={handleFile} />
</div></div>
<div className="row"><div className="col-xs-12">
{data.length ? <button className="btn btn-success" onClick={exportFile}>Export</button> : ""}
</div></div>
<div className="row"><div className="col-xs-12">
<OutTable data={data} cols={cols} />
</div></div>
</DragDropFile>
);
}
/* -------------------------------------------------------------------------- */
/*
Simple HTML5 file drag-and-drop wrapper
usage: <DragDropFile handleFile={handleFile}>...</DragDropFile>
handleFile(file:File):void;
*/
function DragDropFile({ handleFile, children }) {
const suppress = (e) => { e.stopPropagation(); e.preventDefault(); };
const handleDrop = (e) => {
e.stopPropagation(); e.preventDefault();
const files = e.dataTransfer.files;
if (files && files[0]) handleFile(files[0]);
};
return ( <div onDrop={handleDrop} onDragEnter={suppress} onDragOver={suppress}>{children}</div> );
}
/*
Simple HTML5 file input wrapper
usage: <DataInput handleFile={callback} />
handleFile(file:File):void;
*/
function DataInput({ handleFile }) {
const handleChange = (e) => {
const files = e.target.files;
if (files && files[0]) handleFile(files[0]);
};
return (
<form className="form-inline">
<div className="form-group">
<label htmlFor="file">Drag or choose a spreadsheet file</label><br />
<input type="file" className="form-control" id="file" accept={SheetJSFT} onChange={handleChange} />
</div>
</form>
)
}
/* list of supported file types */
const SheetJSFT = [
"xlsx", "xlsb", "xlsm", "xls", "xml", "csv", "txt", "ods", "fods", "uos", "sylk", "dif", "dbf", "prn", "qpw", "123", "wb*", "wq*", "html", "htm"
].map(x => `.${x}`).join(",");
/*
Simple HTML Table
usage: <OutTable data={data} cols={cols} />
data:Array<Array<any> >;
cols:Array<{name:string, key:number|string}>;
*/
function OutTable({ data, cols }) {
return (
<div className="table-responsive">
<table className="table table-striped">
<thead>
<tr>{cols.map((c) => <th key={c.key}>{c.name}</th>)}</tr>
</thead>
<tbody>
{data.map((r, i) => <tr key={i}>
{cols.map(c => <td key={c.key}>{r[c.key]}</td>)}
</tr>)}
</tbody>
</table>
</div>
);
}
/* React 18 uses ReactDOM.createRoot; < 18 should use ReactDOM.render */
const root_elt = document.getElementById('app');
if(typeof ReactDOM.createRoot !== "undefined") {
const root = ReactDOM.createRoot(root_elt);
root.render(<SheetJSApp/>);
} else {
ReactDOM.render(<SheetJSApp />, root_elt);
}
</script>
</body>
</html>