用 JavaScript 通过 C++ 管理 Excel 图表的标题
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在Excel图表中，有两种标题：
- 图表标题
- 轴标题
标题选项
Aspose.Cells for JavaScript 通过 C++ 还支持在运行时管理图表的标题。使用 Title 对象，您可以更改标题的文本、字体和填充格式。
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设置图表或坐标轴的标题
您可以使用 Microsoft Excel 在 WYSIWYG 环境中设置图表及其轴的标题。 Aspose.Cells for JavaScript 通过 C++ 也允许开发者在运行时设置图表及其轴的标题。所有图表及其轴都包含一个 Title 属性，可以用于设置它们的标题，示例如下：
以下代码片段演示了如何为图表和轴设置标题。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Aspose.Cells Chart 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 () => {
// Instantiate a Workbook object
const workbook = new Workbook();
// Adding a new worksheet to the Workbook object
const sheetIndex = workbook.worksheets.add();
// Obtaining the reference of the newly added worksheet by passing its sheet index
const worksheet = workbook.worksheets.get(sheetIndex);
// Adding sample values to cells
worksheet.cells.get("A1").value = 50;
worksheet.cells.get("A2").value = 100;
worksheet.cells.get("A3").value = 150;
worksheet.cells.get("B1").value = 60;
worksheet.cells.get("B2").value = 32;
worksheet.cells.get("B3").value = 50;
// Adding a chart to the worksheet
const chartIndex = worksheet.charts.add(AsposeCells.ChartType.Column, 5, 0, 15, 5);
// Accessing the instance of the newly added chart
const chart = worksheet.charts.get(chartIndex);
// Adding SeriesCollection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.nSeries.add("A1:B3", true);
// Setting the foreground color of the plot area
chart.plotArea.area.foregroundColor = AsposeCells.Color.Blue;
// Setting the foreground color of the chart area
chart.chartArea.area.foregroundColor = AsposeCells.Color.Yellow;
// Setting the foreground color of the 1st SeriesCollection area
chart.nSeries.get(0).area.foregroundColor = AsposeCells.Color.Red;
// Setting the foreground color of the area of the 1st SeriesCollection point
chart.nSeries.get(0).points.get(0).area.foregroundColor = AsposeCells.Color.Cyan;
// Filling the area of the 2nd SeriesCollection with a gradient
chart.nSeries.get(1).area.fillFormat.oneColorGradient(AsposeCells.Color.Lime, 1, AsposeCells.GradientStyleType.Horizontal, 1);
// Setting the title of a chart
chart.title.text = "Title";
// Setting the font color of the chart title to blue
chart.title.font.color = AsposeCells.Color.Blue;
// Setting the title of category axis of the chart
chart.categoryAxis.title.text = "Category";
// Setting the title of value axis of the chart
chart.valueAxis.title.text = "Value";
// Saving 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 = 'book1.out.xls';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Workbook created successfully! Click the download link to get the file.</p>';
});
</script>
</html>