sheetjs-clone/index.html
2013-10-10 02:44:16 -04:00

96 lines
2.5 KiB
HTML

<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
}
</style>
<b>JS-XLSX</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 the output in CSV.</div>
<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(sheet) {
function stringify(val) {
switch(val.t){
case 'n': return val.v;
case 's': case 'str': return JSON.stringify(val.v);
default: throw 'unrecognized type ' + val.t;
}
}
if(sheet["!ref"]) {
var r = XLSX.utils.decode_range(sheet["!ref"]);
for(var R = r.s.r; R <= r.e.r; ++R) {
var row = [];
for(var C = r.s.c; C <= r.e.c; ++C) {
var val = sheet[XLSX.utils.encode_cell({c:C,r:R})];
row.push(val ? stringify(val) : "");
}
out.innerText += (row.join(",") + "\n");
}
}
}
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'});
if(get_radio_value("format") === "json"){
out.innerText = JSON.stringify(to_json(xlsx), 2, 2);
} else {
to_csv(xlsx.Sheets[xlsx.SheetNames[0]]);
}
};
reader.readAsBinaryString(f);
}
}
function handleDragover(e) {
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
}
drop.addEventListener('dragover', handleDragover, false);
drop.addEventListener('drop', handleDrop, false);
</script>