Xpath如何从后代节点获取文本

Question

I have something like this:

<div id="m0">
...
 <tr>
  <td></td>
  <td></td>
  <td>Radio</td>
 </tr>
</div>

<div id="m1">
...
<tr>
  <td></td>
  <td></td>
  <td> 
    <a>TV channel</a>
    <font color="#555555">...</font>
  </td>
</tr>
<tr>
  <td></td>
  <td></td>
  <td>
     <i> </i>
  </td>
</tr>
<tr>
  <td></td>
  <td></td>
  <td> 
     <i> Other channel </i>
  </td>
</tr>

I want to get this as result: ['Radio','TV Channel',' ','Other channel]

I have tried to do: ch_nodes=tree.xpath('//div[@id="%s"]/table[@class= "fl"]/tr/td[3]/descendant-or-self::*'%div)

After that for each node i get the text but it gives me nodes that i do not want like <font> content.

I have tried this too : ch_nodes=tree.xpath('//div[@id="%s"]/table[@class= "fl"]/tr/td[3]/descendant-or-self::*[2]'%div) but does not give me the self content if does not have child nodes.

How can i get ['Radio','TV Channel',' ','Other channel] ?

Answer 1

Get each first text-node from tr :

$x("//table//tr//*[1]/text()")

If you want to get each first non-empty text-node from tr :

$x("//table//tr//*[boolean(string-length(normalize-space(text())))][1]/text()")