<style> #drop{ border:2px dashed #bbb; -moz-border-radius:5px; -webkit-border-radius:5px; border-radius:5px; padding:25px; text-align:center; font:20pt bold,"Vollkorn";color:#bbb } #b64data{ width:100%; } </style> <b>JS-XLSX Live Demo</b><br /> <input type="radio" name="format" value="csv" checked> CSV<br> <input type="radio" name="format" value="json"> JSON<br> <div id="drop">Drop an XLSX file here to see data in CSV or JSON.</div> <textarea id="b64data">... or paste a base64-encoding here</textarea> <input type="button" id="dotext" value="Click here to process the base64 text" onclick="b64it();"/> <pre id="out"></pre> <br /> <script src="jszip.js"></script> <script src="xlsx.js"></script> <script> function get_radio_value( radioName ) { var radios = document.getElementsByName( radioName ); for( var i = 0; i < radios.length; i++ ) { if( radios[i].checked ) { return radios[i].value; } } } //Row object array form: //Each row is an object with column headers as keys function to_json(workbook) { var result = {}; workbook.SheetNames.forEach(function(sheetName) { var rObjArr = XLSX.utils.sheet_to_row_object_array(workbook.Sheets[sheetName]); if(rObjArr.length > 0){ result[sheetName] = rObjArr; } }); return result; } function to_csv(workbook) { var result = []; workbook.SheetNames.forEach(function(sheetName) { var rObjArr = XLSX.utils.sheet_to_csv(workbook.Sheets[sheetName]); if(rObjArr.length > 0){ result.push("SHEET: " + sheetName); result.push(""); result.push(rObjArr); } }); return result.join("\n"); } var tarea = document.getElementById('b64data'); function b64it() { var xlsx = XLSX.read(tarea.value, {type: 'base64'}); process_xlsx(xlsx); } function process_xlsx(xlsx) { var output = ""; if(get_radio_value("format") === "json"){ output = JSON.stringify(to_json(xlsx), 2, 2); } else { output = to_csv(xlsx); } if(out.innerText === undefined) out.textContent = output; else out.innerText = output; } var drop = document.getElementById('drop'); function handleDrop(e) { e.stopPropagation(); e.preventDefault(); var files = e.dataTransfer.files; var i,f; for (i = 0, f = files[i]; i != files.length; ++i) { var reader = new FileReader(); var name = f.name; reader.onload = function(e) { var data = e.target.result; var xlsx = XLSX.read(data, {type: 'binary'}); process_xlsx(xlsx); }; reader.readAsBinaryString(f); } } function handleDragover(e) { e.stopPropagation(); e.preventDefault(); e.dataTransfer.dropEffect = 'copy'; } if(drop.addEventListener) { // IE compatibility drop.addEventListener('dragover', handleDragover, false); drop.addEventListener('drop', handleDrop, false); } </script>