更改单元格对齐方式并保持现有格式

可能的使用场景

有时，你想更改多个单元格的对齐方式，同时想保持现有格式。Aspose.Cells for JavaScript通过C++允许你使用StyleFlag.alignments(boolean)方法做到这一点。如果你将其设置为true，对齐的更改将生效，否则不生效。请注意，StyleFlag对象作为参数传递给实际应用格式的Range.applyStyle(Style, StyleFlag)方法。

更改单元格对齐方式并保留现有格式

以下示例代码加载了示例Excel文件(67338585.xlsx)，创建范围并将其在水平和垂直方向上居中对齐，并保持现有格式不变。以下屏幕截图比较了示例Excel文件和输出Excel文件(67338586.xlsx)，并显示了所有单元格的现有格式相同，只是单元格现在在水平和垂直方向上都居中对齐。

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示例代码

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Change Cells Alignment and Keep Existing Formatting</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, StyleFlag, TextAlignmentType, 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();

            // Instantiate Workbook from uploaded file
            const workbook = new Workbook(new Uint8Array(arrayBuffer));

            // Access first worksheet
            const worksheet = workbook.worksheets.get(0);

            // Create cells range
            const range = worksheet.cells.createRange("B2:D7");

            // Create style object
            const style = workbook.createStyle();

            // Set the horizontal and vertical alignment to center using property assignments
            style.horizontalAlignment = TextAlignmentType.Center;
            style.verticalAlignment = TextAlignmentType.Center;

            // Create style flag object
            const flag = new StyleFlag();
            flag.alignments = true; // Set style flag alignments true

            // Apply style to range of cells
            range.applyStyle(style, flag);

            // Save the workbook in XLSX format and provide 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 = 'outputChangeCellsAlignmentAndKeepExistingFormatting.xlsx';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download Excel File';

            resultDiv.innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the modified file.</p>';
        });
    </script>
</html>

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