修改现有风格
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要将相同的格式选项应用于单元格，请创建一个新的格式样式对象。格式样式对象是格式特性的组合，如字体、字体大小、缩进、数字、边框、模式等，命名并存储为一组。应用时，该样式中的所有格式都会被应用。
您也可以使用现有的样式，将其与工作簿一起保存，并使用其格式化具有相同属性的信息。
当单元格没有明确格式化时，将应用普通样式（工作簿的默认样式）。除了普通样式之外，Microsoft Excel还预定义了几种样式，包括逗号、货币和百分号。
Aspose.Cells允许修改任何这些样式或您使用所需属性定义的任何其他样式。
使用Microsoft Excel
更新Microsoft Excel 97-2003中的样式：
- 单击格式菜单上的样式。
- 从样式名称列表中选择要修改的样式。
- 单击修改。
- 使用格式单元格对话框中的选项卡选择要使用的样式选项。
- 点击确定。
- 在样式包括下，指定您想要的样式特征。
- 单击确定以保存样式并将其应用于所选范围。
使用 Aspose.Cells for JavaScript 通过 C++
以下示例演示了如何使用Style.update()方法。
创建和修改样式
此示例创建一个 Style 对象，将其应用于一块区域的单元格，并修改 Style 对象。所做的更改会自动应用到单元格及其所应用的区域。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
<meta charset="utf-8" />
</head>
<body>
<h1>Aspose.Cells Style Example</h1>
<p>Select an existing Excel file to modify or leave empty to create a new workbook.</p>
<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, 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');
// Instantiate workbook from uploaded file or create a new one
let workbook;
if (fileInput.files && fileInput.files.length) {
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
workbook = new Workbook(new Uint8Array(arrayBuffer));
} else {
workbook = new Workbook();
}
// Create a new style object.
const style = workbook.createStyle();
// Set the number format.
style.number = 14;
// Set the font color to red color.
style.font.color = AsposeCells.Color.Red;
// Name the style.
style.name = "Date1";
// Get the first worksheet cells.
const cells = workbook.worksheets.get(0).cells;
// Specify the style (described above) to A1 cell.
const cellA1 = cells.get("A1");
cellA1.style = style;
// Create a range (B1:D1).
const range = cells.createRange("B1", "D1");
// Initialize styleflag object.
const flag = new AsposeCells.StyleFlag();
// Set all formatting attributes on.
flag.all = true;
// Apply the style (described above) to the range.
range.applyStyle(style, flag);
// Modify the style (described above) and change the font color from red to black.
style.font.color = AsposeCells.Color.Black;
// Done! Since the named style (described above) has been set to a cell and range,
// The change would be reflected(new modification is implemented) to cell(A1) and
// Range (B1:D1).
style.update();
// Save the excel file.
const outputData = workbook.save(SaveFormat.Excel97To2003);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'book_styles.out.xls';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
resultDiv.innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
修改现有样式
此示例使用一个简单的模板Excel文件，其中已经应用了一个名为“Percent”的样式到一个范围中。该示例：
- 获取样式，
- 创建一个样式对象，并
- 修改样式格式。
修改将自动应用于应用了样式的范围。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Apply Named Style 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, 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 () => {
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 a workbook from the uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Get the named style "Percent" via the styles collection
const style = workbook.styles.get("Percent");
// Change the number format to "0.00%".
style.number = 11;
// Set the font color.
style.font.color = Color.Red;
// Update the style so ranges using this named style are updated.
style.update();
// Save the workbook and provide a download link
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'book2.out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
resultDiv.innerHTML = '<p style="color: green;">Style updated successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>