Question

我无法找到问题的正确答案。我在表中有行，每行包含一个按钮。如何找到我刚刚点击的按钮的行索引。

<tr>
    <td>111</td>
    <td>aaa</td>
    <td><input type="submit" name="first" id="first" value="First" onclick="countRow(this.id)" /></td>
  </tr>
  <tr>
    <td>222</td>
    <td>bbb</td>
    <td><input type="submit" name="sec" id="second" value="Second" onclick="countRow(this.id)" /></td>
  </tr>
  <tr>
    <td>333</td>
    <td>ccc</td>
    <td><input type="submit" name="third" id="third" value="Third" onclick="countRow(this.id)" /></td>
  </tr>

Answer 1

使用tbody标签和此javascript

＆＃13;

function countRow(id) {
  var table = document.getElementById('dataTable')
  var tbody = table.getElementsByTagName('tbody')[0]
  var rows = tbody.getElementsByTagName('tr');
  for (i = 0; i < rows.length; i++) {
    rows[i].onclick = function() {
      alert(this.rowIndex + 1);
    }
  }
}

＆＃13;

<table id="dataTable">
  <tbody>
    <tr>
      <td>111</td>
      <td>aaa</td>
      <td>
        <input type="submit" name="first" id="first" value="First" onclick="countRow(this.id)" />
      </td>
    </tr>
    <tr>
      <td>222</td>
      <td>bbb</td>
      <td>
        <input type="submit" name="sec" id="second" value="Second" onclick="countRow(this.id)" />
      </td>
    </tr>
    <tr>
      <td>333</td>
      <td>ccc</td>
      <td>
        <input type="submit" name="third" id="third" value="Third" onclick="countRow(this.id)" />
      </td>
    </tr>
  </tbody>
</table>

＆＃13;

Answer 2

如果我们将indexOf转换为数组，请使用nodeList数组原型。

将参数传递为this（当前元素）而不是this.id

试试这个：

function countRow(elem) {
  var trElement = elem.parentElement.parentElement;
  var tr = document.getElementsByTagName('tr');
  tr = Array.prototype.slice.call(tr);
  alert(tr.indexOf(trElement));
}

<table>
  <tr>
    <td>111</td>
    <td>aaa</td>
    <td>
      <input type="submit" name="first" id="first" value="First" onclick="countRow(this)" />
    </td>
  </tr>
  <tr>
    <td>222</td>
    <td>bbb</td>
    <td>
      <input type="submit" name="sec" id="second" value="Second" onclick="countRow(this)" />
    </td>
  </tr>
  <tr>
    <td>333</td>
    <td>ccc</td>
    <td>
      <input type="submit" name="third" id="third" value="Third" onclick="countRow(this)" />
    </td>
  </tr>

</table>

Answer 3

$('input[type=submit').click(function() {
   var trid = $(this).closest('tr').attr('id'); // table row ID 
   $('div').text(trid);
 });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<table>
<tr id="row1">
    <td>111</td>
    <td>aaa</td>
    <td><input type="submit" name="first" id="first" value="First" /></td>
  </tr>
  <tr id="row2">
    <td>222</td>
    <td>bbb</td>
    <td><input type="submit" name="sec" id="second" value="Second" /></td>
  </tr>
  <tr id="row3">
    <td>333</td>
    <td>ccc</td>
    <td><input type="submit" name="third" id="third" value="Third" /></td>
  </tr>
</table>

<div id="show" style="color: blue">Show the id of the current clicked row: </div>

Answer 4

尝试将此用于表格单元格选择器和所选单元格的操作

http://www.redips.net/javascript/table-td-merge-split/

Answer 5

我假设你想知道<input>元素的id，

<td><input type="submit" name="first" id="first" value="First" onclick="countRow(this.id)" /></td>

所以Onclick你想得到第一个＆＃39;对于上述元素。

所以为此修改元素 -

<td><input type="submit" name="first" id="first" value="First" onclick="countRow()" /></td>

在JavaScript中：

function countRow(){
   // This would give you the id 
    event.target.id
    }

如何找到我刚刚在javascript中点击的行

5 个答案: