Load or Import CSV file with Formulas via JavaScript
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CSV file mostly contains textual data and they do not contain any formulas. However, sometimes it happens that CSV files also contain formulas. Such CSV files should be loaded by setting the TxtLoadOptions.hasFormula as true. Once this property will be set true, Aspose.Cells will not treat formulas as simple text. They will be treated as formulas, and Aspose.Cells formula calculation engine will process them as usual.
The following code illustrates how you can load as well as import a CSV file with formulas. You can use any CSV file. For illustration purposes, we use the simple csv file which contains this data. As you see it contains a formula.
<!DOCTYPE html>
<html>
<head>
<title>Load CSV with Formulas and Save as XLSX</title>
</head>
<body>
<h1>Load CSV with Formulas and Save as XLSX</h1>
<input type="file" id="fileInput" accept=".csv" />
<button id="convertToXlsx">Convert to XLSX</button>
<a id="downloadLink" style="display: none;">Download XLSX</a>
<div id="result"></div>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, TxtLoadOptions, SaveFormat } = AsposeCells;
AsposeCells.onReady().then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('convertToXlsx').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select a CSV file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
const loadOptions = new TxtLoadOptions();
loadOptions.hasFormula = true;
const workbook = new Workbook(new Uint8Array(arrayBuffer), loadOptions);
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = file.name.replace(/\.csv$/i, '.xlsx');
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download XLSX File';
document.getElementById('result').innerHTML = '<p style="color: green;">Conversion completed! Click the download link to get the XLSX file.</p>';
});
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells CSV Load Example</title>
</head>
<body>
<h1>Load CSV with Formulas and Save as XLSX</h1>
<input type="file" id="fileInput" accept=".csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, TxtLoadOptions, Utils } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select a CSV file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
const bytes = new Uint8Array(arrayBuffer);
// TxtLoadOptions configuration
const opts = new TxtLoadOptions();
opts.separator = ',';
opts.hasFormula = true;
// Load your CSV file with formulas in a Workbook object
const workbook = new Workbook(bytes, opts);
// You can also import your CSV file like this
// The code below is importing CSV file starting from cell D4 (rowIndex=3, colIndex=3)
const worksheet = workbook.worksheets.get(0);
worksheet.cells.importCSV(bytes, opts, 3, 3);
// Save your workbook in Xlsx format
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'output_out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the converted file.</p>';
});
</script>
</html>
The code first loads the CSV file, then imports it again at cell D4. Finally, it saves the workbook object in XLSX format. The output XLSX file looks like this. As you see, cell C3 and F4 contain formulas and their result is 800.
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