Create Signature Line in an Excel Workbook using Aspose.Cells for JavaScript via C++
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Introduction
Microsoft Excel provides a feature to add Signature Line in Excel workbooks. You can add a Signature Line by clicking the Insert Tab and then selecting Signature Line from the Text group.
How to Create Signature Line for Excel
Aspose.Cells for JavaScript via C++ also provides this feature and has exposed the Picture.signatureLine property for this purpose. This article will explain how to use this property to add a Signature Line using Aspose.Cells.
The following sample code adds a Signature Line using Picture.signatureLine property and saves the workbook.
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Add Signature Line Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.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, SignatureLine, 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');
// Create or load workbook
let workbook;
if (fileInput.files.length) {
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
workbook = new Workbook(new Uint8Array(arrayBuffer));
} else {
workbook = new Workbook();
}
// Create signature line object
const signatureLine = new SignatureLine();
signatureLine.signer = "John Doe";
signatureLine.title = "Development Lead";
signatureLine.email = "john.doe@aspose.com";
// Adds a Signature Line to the first worksheet.
workbook.worksheets.get(0).shapes.addSignatureLine(1, 1, signatureLine);
// Save the workbook
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 Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Signature line added successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>