Export Worksheet CSS Separately in Output HTML with JavaScript via C++
Possible Usage Scenarios
Aspose.Cells for JavaScript via C++ provides the feature to export worksheet CSS separately when you convert your Excel file to HTML. Please use HtmlSaveOptions.exportWorksheetCSSSeparately property for this purpose and set it to true while saving the Excel file to HTML format.
Export Worksheet CSS Separately in Output HTML
The following sample code creates an Excel file, adds some text in cell B5 in Red color, and then saves it in HTML format using HtmlSaveOptions.exportWorksheetCSSSeparately property. Please see the output HTML generated by the code for reference. You will find stylesheet.css inside it as an outcome of the sample code.
Sample Code
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Export Worksheet CSS Separately 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, HtmlSaveOptions, Color, 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 () => {
// Create a new workbook
const wb = new Workbook();
// Access first worksheet
const ws = wb.worksheets.get(0);
// Access cell B5 and put value inside it
const cell = ws.cells.get("B5");
cell.value = "This is some text.";
// Set the style of the cell - font color is Red
const st = cell.style;
st.font.color = Color.Red;
cell.style = st;
// Specify html save options - export worksheet css separately
const opts = new HtmlSaveOptions();
opts.exportWorksheetCSSSeparately = true;
// Save the workbook in html
const outputData = wb.save(SaveFormat.Html, opts);
const blob = new Blob([outputData], { type: 'text/html' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'outputExportWorksheetCSSSeparately.html';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download HTML File';
document.getElementById('result').innerHTML = '<p style="color: green;">Workbook saved as HTML. Click the download link to get the file.</p>';
});
</script>
</html>
Export single sheet workbook to HTML
When a workbook with multiple sheets is converted to HTML using Aspose.Cells for JavaScript via C++, it creates an HTML file along with a folder containing CSS and multiple HTML files. When this HTML file is opened in the browser, the tabs are visible. The same behavior is required for a workbook with a single worksheet when it is converted to HTML. Earlier, no separate folder was created for single sheet workbooks, and only an HTML file was created. Such an HTML file does not show tabs when opened in the browser. MS Excel creates a proper folder and HTML for a single sheet also, and hence the same behavior is implemented using Aspose.Cells APIs. The sample file can be downloaded from the following link for use in the sample code below:
Sample Code
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Save Workbook as HTML 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, HtmlSaveOptions, EncodingType, 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 resultDiv = document.getElementById('result');
const fileInput = document.getElementById('fileInput');
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();
// Instantiating a Workbook object by loading the selected file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Specify HTML save options
const options = new HtmlSaveOptions();
// Set optional settings (converted from setters to properties)
options.encoding = EncodingType.UTF8;
options.exportImagesAsBase64 = true;
options.exportGridLines = true;
options.exportSimilarBorderStyle = true;
options.exportBogusRowData = true;
options.excludeUnusedStyles = true;
options.exportHiddenWorksheet = true;
// Save the workbook in HTML format with specified HtmlSaveOptions
const outputData = workbook.save(SaveFormat.Html, options);
const blob = new Blob([outputData], { type: 'text/html' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'outputSampleSingleSheet.htm';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download HTML File';
resultDiv.innerHTML = '<p style="color: green;">Workbook saved to HTML. Click the download link to get the file.</p>';
});
</script>
</html>