使用Javascript将可扩展表导出为CSV

// 获取可扩展表的数据
var table = document.getElementById("myTable");
var rows = table.getElementsByTagName("tr");
var csvData = [];

// 遍历表格行和列，将数据存储到csvData数组中
for (var i = 0; i < rows.length; i++) {
  var rowData = [];
  var cells = rows[i].getElementsByTagName("td");
  for (var j = 0; j < cells.length; j++) {
    rowData.push(cells[j].innerText);
  }
  csvData.push(rowData.join(","));
}

// 将csvData数组转换为CSV格式的字符串
var csvString = csvData.join("\n");

// 创建Blob对象
var blob = new Blob([csvString], { type: "text/csv;charset=utf-8;" });

// 创建下载链接
var downloadLink = document.createElement("a");
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = "export.csv";

// 添加下载链接到页面
document.body.appendChild(downloadLink);

// 触发点击事件，下载CSV文件
downloadLink.click();

<table id="myTable">
  <tr>
    <th>姓名</th>
    <th>年龄</th>
    <th>性别</th>
  </tr>
  <tr>
    <td>张三</td>
    <td>25</td>
    <td>男</td>
  </tr>
  <tr>
    <td>李四</td>
    <td>30</td>
    <td>女</td>
  </tr>
</table>