Detect if Worksheet is Password Protected with JavaScript via C++
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It is possible to protect the workbooks and worksheets separately. For instance, a spreadsheet may contain one or more worksheets that are password-protected, however, the spreadsheet itself may or may not be protected. Aspose.Cells APIs provide the means to detect if a given worksheet is password protected or not. This article demonstrates the usage of Aspose.Cells for JavaScript via C++ API to achieve the same.
Aspose.Cells for JavaScript via C++ has exposed the Protection.isProtectedWithPassword() property to detect if a worksheet is password protected or not. Boolean type Protection.isProtectedWithPassword() property returns true if Worksheet is password-protected and false if not.
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Check Worksheet Password Protection</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, Worksheet, Cell, 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');
const resultDiv = document.getElementById('result');
if (!fileInput.files.length) {
resultDiv.innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Create an instance of Workbook and load a spreadsheet
const book = new Workbook(new Uint8Array(arrayBuffer));
// Access the protected Worksheet
const sheet = book.worksheets.get(0);
// Check if Worksheet is password protected
if (sheet.protection.isProtectedWithPassword()) {
resultDiv.innerHTML = '<p>Worksheet is password protected</p>';
console.log("Worksheet is password protected");
} else {
resultDiv.innerHTML = '<p>Worksheet is not password protected</p>';
console.log("Worksheet is not password protected");
}
});
</script>
</html>