通过JavaScript通过C++按名称访问文本框
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按名称访问文本框
早先，可以通过索引访问Worksheet.textBoxes集合中的文本框，但现在也可以通过名称访问此集合中的文本框。如果你已知其名称，这是一种方便快捷的访问方式。
以下示例代码首先创建了一个文本框并分配了一些文本和名称。然后在接下来的行中，我们通过其名称访问相同的文本框并打印其文本。
JavaScript代码，通过名称访问文本框
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells TextBox Example</title>
</head>
<body>
<h1>TextBox 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');
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();
const workbook = new Workbook(new Uint8Array(arrayBuffer));
const sheet = workbook.worksheets.get(0);
const idx = sheet.textBoxes.add(10, 10, 10, 10);
const tb1 = sheet.textBoxes.get(idx);
tb1.name = "MyTextBox";
tb1.text = "This is MyTextBox";
const tb2 = sheet.textBoxes.get("MyTextBox");
console.log(tb2.text);
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'sample.modified.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Modified Excel File';
document.getElementById('result').innerHTML = `<p style="color: green;">TextBox added. Text from named TextBox: ${tb2.text}</p>`;
});
</script>
</html>
样本代码生成的控制台输出
This is MyTextBox