Question

Table .cells将返回table中的所有内部单元格。在IE中可以正常工作。但是在Chrome浏览器中，.cells将返回“ undefined”，因为不存在此类属性。我们必须遍历每一行以查找单元格。是否还有其他方法可以将所有单元格都保存为chrome？

function myFunction() {
     var x = document.getElementById("myTable").cells.length;
     document.getElementById("demo").innerHTML = "Found " + x + " cells in 
     the first tr element.";
}

<table id="myTable">
  <tr>
      <td>cell 1</td>
      <td>cell 2</td>
  </tr>
  <tr>
      <td>cell 3</td>
      <td>cell 4</td>
  </tr>
</table>

Answer 1

没有什么叫document.getElementById("myTable").cells.length .cells实际上什么也不返回，因此您的x变量返回undefined并且您没有得到单元格编号。

相反，您可以执行以下操作：

function myFunction() {
     var x = document.getElementById("myTable");
     // if you need all the cells which is td elements
     var cells = x.getElementsByTagName('td');
     
     // if you need only cells in a single row which is a tr element
     var cellsPerRow = x.getElementsByTagName('tr')[0].getElementsByTagName('td');
     document.getElementById("demo").innerHTML = "Found " + cellsPerRow.length + " cells in the first tr element." + "And " + cells.length + " cells in total" ;
}

myFunction();

<table id="myTable">
  <tr>
      <td>cell 1</td>
      <td>cell 2</td>
  </tr>
  <tr>
      <td>cell 3</td>
      <td>cell 4</td>
  </tr>
</table>

<div id='demo'></div>

铬中的表格单元问题

1 个答案: