以"." 字符对齐 "Savings" 列 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function displayResult() {
      var c = document.getElementById("myCol");
      alert("第二列对齐的字符是: " + c.ch);
    }
  </script>
</head>
<body>

  <table border="1">
    <colgroup>
      <col>
      <col id="myCol" align="char" char=".">
    </colgroup>
    <tr>
      <th>月份</th>
      <th>存款</th>
    </tr>
    <tr>
      <td>January</td>
      <td>$100.00</td>
    </tr>
    <tr>
      <td>February</td>
      <td>$10.00</td>
    </tr>
  </table>
  <br>
  <button type="button" onclick="displayResult()">获取字符对齐</button>
  <p><b>注意:</b>不是所有的主流浏览器都支持char属性。</p>

</body>
</html>
        