用于将两个html表导出到CSV文件中的两个工作表的Javascript代码

// 导出第一个表格的数据
function exportTable1ToCSV() {
  var csv = [];
  var rows = document.getElementById("table1").querySelectorAll("tr");

  for (var i = 0; i < rows.length; i++) {
    var row = [], cols = rows[i].querySelectorAll("td, th");

    for (var j = 0; j < cols.length; j++)
      row.push(cols[j].innerText);

    csv.push(row.join(","));
  }

  // 创建并下载CSV文件
  downloadCSV(csv.join("\n"), "table1.csv");
}

// 导出第二个表格的数据
function exportTable2ToCSV() {
  var csv = [];
  var rows = document.getElementById("table2").querySelectorAll("tr");

  for (var i = 0; i < rows.length; i++) {
    var row = [], cols = rows[i].querySelectorAll("td, th");

    for (var j = 0; j < cols.length; j++)
      row.push(cols[j].innerText);

    csv.push(row.join(","));
  }

  // 创建并下载CSV文件
  downloadCSV(csv.join("\n"), "table2.csv");
}

// 创建并下载CSV文件
function downloadCSV(csv, filename) {
  var csvFile;
  var downloadLink;

  // 创建CSV文件
  csvFile = new Blob([csv], {type: "text/csv"});

  // 创建下载链接
  downloadLink = document.createElement("a");
  downloadLink.download = filename;
  downloadLink.href = window.URL.createObjectURL(csvFile);
  downloadLink.style.display = "none";

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

  // 点击下载链接
  downloadLink.click();
}

// 绑定导出按钮的点击事件
document.getElementById("exportTable1").addEventListener("click", exportTable1ToCSV);
document.getElementById("exportTable2").addEventListener("click", exportTable2ToCSV);

<table id="table1">
  <tr>
    <th>Header 1</th>
    <th>Header 2</th>
  </tr>
  <tr>
    <td>Data 1</td>
    <td>Data 2</td>
  </tr>
</table>

<button id="exportTable1">导出表格1</button>

<table id="table2">
  <tr>
    <th>Header 1</th>
    <th>Header 2</th>
  </tr>
  <tr>
    <td>Data 1</td>
    <td>Data 2</td>
  </tr>
</table>

<button id="exportTable2">导出表格2</button>