forked from sheetjs/sheetjs
96 lines
2.5 KiB
HTML
96 lines
2.5 KiB
HTML
<style>
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#drop{
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border:2px dashed #bbb;
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-moz-border-radius:5px;
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-webkit-border-radius:5px;
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border-radius:5px;
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padding:25px;
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text-align:center;
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font:20pt bold,"Vollkorn";color:#bbb
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}
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</style>
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<b>JS-XLSX</b><br />
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<input type="radio" name="format" value="csv" checked> CSV<br>
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<input type="radio" name="format" value="json"> JSON<br>
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<div id="drop">Drop an XLSX file here to see the output in CSV.</div>
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<pre id="out"></pre>
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<br />
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<script src="jszip.js"></script>
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<script src="xlsx.js"></script>
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<script>
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function get_radio_value( radioName ) {
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var radios = document.getElementsByName( radioName );
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for( var i = 0; i < radios.length; i++ ) {
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if( radios[i].checked ) {
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return radios[i].value;
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}
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}
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}
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//Row object array form:
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//Each row is an object with column headers as keys
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function to_json(workbook) {
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var result = {};
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workbook.SheetNames.forEach(function(sheetName) {
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var rObjArr = XLSX.utils.sheet_to_row_object_array(workbook.Sheets[sheetName]);
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if(rObjArr.length > 0){
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result[sheetName] = rObjArr;
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}
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});
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return result;
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}
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function to_csv(sheet) {
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function stringify(val) {
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switch(val.t){
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case 'n': return val.v;
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case 's': case 'str': return JSON.stringify(val.v);
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default: throw 'unrecognized type ' + val.t;
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}
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}
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if(sheet["!ref"]) {
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var r = XLSX.utils.decode_range(sheet["!ref"]);
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for(var R = r.s.r; R <= r.e.r; ++R) {
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var row = [];
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for(var C = r.s.c; C <= r.e.c; ++C) {
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var val = sheet[XLSX.utils.encode_cell({c:C,r:R})];
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row.push(val ? stringify(val) : "");
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}
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out.innerText += (row.join(",") + "\n");
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}
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}
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}
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var drop = document.getElementById('drop');
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function handleDrop(e) {
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e.stopPropagation();
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e.preventDefault();
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var files = e.dataTransfer.files;
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var i,f;
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for (i = 0, f = files[i]; i != files.length; ++i) {
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var reader = new FileReader();
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var name = f.name;
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reader.onload = function(e) {
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var data = e.target.result;
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var xlsx = XLSX.read(data, {type: 'binary'});
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if(get_radio_value("format") === "json"){
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out.innerText = JSON.stringify(to_json(xlsx), 2, 2);
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} else {
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to_csv(xlsx.Sheets[xlsx.SheetNames[0]]);
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}
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};
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reader.readAsBinaryString(f);
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}
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}
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function handleDragover(e) {
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e.stopPropagation();
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e.preventDefault();
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e.dataTransfer.dropEffect = 'copy';
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}
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drop.addEventListener('dragover', handleDragover, false);
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drop.addEventListener('drop', handleDrop, false);
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</script>
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