Javascript-获取所有表格-> tr值 [英] Javascript - get all table -> tr values

问题描述

<table>
  <tr><td>foo</td></tr>
  <tr><td>bar</td></tr>
  <tr><td>[e-mail]</td></tr>
</table>

任何人都可以告诉我如何编写Javascript行以仅获取下表中的电子邮件地址吗?我一直在搜索很多东西，但我遇到的只是教程，在td中任一表中都使用"id" ..我想在没有ID的情况下进行操作..请帮助

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/.

很显然，您必须更改document.getElementsByTagName("table")[0]才能正确匹配您的表

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

如果您使用的是jQuery，它会更容易:

If you're using jQuery it's easier:

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

有关更多信息，请参见 MDN DOM参考，其中显示了哪些属性是可以使用哪些元素遍历DOM.

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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