Read and Write Table with Query Table Data Source via JavaScript
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Read and Write Table with Query Table Data Source
With Aspose.Cells for JavaScript via C++, you can read and write a table which has a QueryTable as a data source. The support for this feature also exists for XLS files. The following code snippet demonstrates reading and writing such a table by first reading the table and then modifying it to add the totals row.
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>SampleTableWithQueryTable Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx" />
<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 } = 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 an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Instantiate Workbook from uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Access the first worksheet
const worksheet = workbook.worksheets.get(0);
// Access the first table (ListObject) in the worksheet
const table = worksheet.listObjects.get(0);
// Check the data source type if it is query table
if (table.dataSourceType === AsposeCells.TableDataSourceType.QueryTable) {
table.showTotals = true;
}
// Save the modified workbook as Excel97To2003 (.xls)
const outputData = workbook.save(SaveFormat.Excel97To2003);
const blob = new Blob([outputData], { type: "application/vnd.ms-excel" });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'SampleTableWithQueryTable_out.xls';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
The source and output excel files are attached for reference.