Javascript - 获取所有表格 ->tr值

问题描述

<table>
  <tr><td>foo</td></tr>
  <tr><td>bar</td></tr>
  <tr><td>[email protected]</td></tr>
</table>

谁能告诉我如何编写一个 Javascript 行来只获取下表中的电子邮件地址，我已经搜索了很多，但我遇到的只是在 td 的任一表中使用id"的教程.. 我想在没有 id 的情况下进行 .. 请帮忙

Can anybody tell me how to write a Javascript line to only grab the email address in the table below, I've been searching a lot, but all I come across is tutorials which use "id" in either table on in td .. I want to do it without having an id .. please help

推荐答案

var rows = document.getElementsByTagName("table")[0].rows;
var last = rows[rows.length - 1];
var cell = last.cells[0];
var value = cell.innerHTML

在这里自己尝试:http://jsfiddle.net/ReyNx/.

显然，您必须更改 document.getElementsByTagName("table")[0] 以适当匹配您的表格

Obviously you'll have to change document.getElementsByTagName("table")[0] to appropriately match your table

如果您使用 jQuery，那就更容易了:

If you're using jQuery it's easier:

var value = $('table tr:last td').text();

有关详细信息，请参阅 MDN DOM 参考，其中显示了哪些属性是可用于遍历 DOM 的元素.

For more info, see the MDN DOM reference, which shows you which properties are available on which elements to traverse the DOM.

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