使用行名更改datatable中行的背景色

<table id="myTable">
  <tr data-rowname="row1">
    <td>数据1</td>
    <td>数据2</td>
    <td>数据3</td>
  </tr>
  <tr data-rowname="row2">
    <td>数据4</td>
    <td>数据5</td>
    <td>数据6</td>
  </tr>
  <tr data-rowname="row3">
    <td>数据7</td>
    <td>数据8</td>
    <td>数据9</td>
  </tr>
</table>

[data-rowname="row1"] {
  background-color: red;
}

[data-rowname="row2"] {
  background-color: blue;
}

[data-rowname="row3"] {
  background-color: green;
}

// 获取datatable
var table = document.getElementById("myTable");

// 获取所有行
var rows = table.getElementsByTagName("tr");

// 遍历每一行，根据行名设置背景色
for (var i = 0; i < rows.length; i++) {
  var row = rows[i];
  var rowName = row.getAttribute("data-rowname");

  // 根据行名设置不同的背景色
  switch (rowName) {
    case "row1":
      row.style.backgroundColor = "red";
      break;
    case "row2":
      row.style.backgroundColor = "blue";
      break;
    case "row3":
      row.style.backgroundColor = "green";
      break;
    default:
      break;
  }
}