JavaScriptをC++経由で使用してワークシートの空白の行と列を削除する方法
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ワークシートからすべての空白行と列を削除することは可能です。たとえば、Microsoft ExcelファイルからPDFを生成する際に、データや関連オブジェクトを含む行や列だけを変換したい場合に便利です。
空の行と列を削除するために以下のAspose.Cellsのメソッドを使用します:
- 空白の行を削除するには、Cells.deleteBlankRows()メソッドを使用します。削除される空白の行については、Row.isBlank()がtrueであるだけでなく、それらの行のいかなるセルにも見えるコメントが定義されていないこと、そしてそれらと交差するピボットテーブルがないことも必要です。
- 空白の列を削除するには、Cells.deleteBlankColumns() メソッドを使用します。
空白の行を削除するJavaScriptコード
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Delete Blank Rows 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, 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();
// Instantiating a Workbook object from the uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Access worksheets collection
const sheets = workbook.worksheets;
// Get first worksheet
const sheet = sheets.get(0);
// Delete blank rows from the worksheet
sheet.cells.deleteBlankRows();
// Save the modified 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 = 'mybook.out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
resultDiv.innerHTML = '<p style="color: green;">Blank rows deleted successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>
空白の列を削除するJavaScriptコード
<!DOCTYPE html>
<html>
<head>
<title>Delete Blank Columns Example</title>
</head>
<body>
<h1>Delete Blank Columns 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 } = 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');
if (!fileInput.files.length) {
document.getElementById('result').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 from the uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Create a Worksheets object with reference to the sheets of the Workbook.
const sheets = workbook.worksheets;
// Get first Worksheet from WorksheetCollection
const sheet = sheets.get(0);
// Delete the Blank Columns from the worksheet
sheet.cells.deleteBlankColumns();
// Saving the modified Excel file
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'mybook.out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Blank columns deleted successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>