将$附加到jquery中特定列的html表中

<script src="https://cdn.jsdelivr.net/npm/jquery/dist/jquery.min.js"></script>

<table id="myTable">
  <tr>
    <th>列1</th>
    <th>列2</th>
    <th>列3</th>
  </tr>
  <tr>
    <td class="column1">数据1</td>
    <td class="column2">数据2</td>
    <td class="column3">数据3</td>
  </tr>
  <tr>
    <td class="column1">数据4</td>
    <td class="column2">数据5</td>
    <td class="column3">数据6</td>
  </tr>
</table>

$(document).ready(function() {
  $(".column2").append("$");
});

<script>
  $(document).ready(function() {
    $(".column2").append("$");
  });
</script>