使用 Jquery 从页面中提取数据？

发布于 2024-08-24 19:23:33 字数 597 浏览 5 评论 0原文

我想提取动态网页上的所有 ISBN，但我无法通过 Yahoo Pipe 提供该网页（用户必须登录才能查看该页面）。有没有办法用 jQuery 做到这一点？如何？

编辑： 结构：

以下是该页面上 HTML 的示例。有一个 ，其中包含一系列元素。其中一个示例大致如下：

<tr> 
  <td>(required/optional)</td>
  <td>LAFORE</td>
  <td>OBJECT ORIENTED PROGRAMMING IN C++ 4E</td>
  <td>9780672323089</td>
  <td>(course and section)</td>
  <td>(pricing information)</td>
</tr>

其中任何一个都没有 id 属性，但结构定义良好。

谢谢！

原文

I'd like to extract all the ISBNs on a dynamic web page that I can't feed through a Yahoo Pipe (the user has to log in to see the page). Is there a way to do that with jQuery? How?

Edit:
The structure:

Here's an example of what the HTML looks like on that page. There's a <table> that has a series of <tr> elements in them. A sample one of those looks roughly like this:

<tr> 
  <td>(required/optional)</td>
  <td>LAFORE</td>
  <td>OBJECT ORIENTED PROGRAMMING IN C++ 4E</td>
  <td>9780672323089</td>
  <td>(course and section)</td>
  <td>(pricing information)</td>
</tr>

There are no id attributes on any of these, the structure is well defined though.

Thanks!

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亣腦蒛氧 2024-08-31 19:23:33

//ideally provide better table selector if multiple tables are there
var isbns = $.makeArray($("table tr td:nth-child(4)"));
for(var i in isbns) {
  isbns[i] = isbns[i].innerHTML;
  alert(isbns[i]);
}
//now isbns is an array which contains all isbns found in the table

//ideally provide better table selector if multiple tables are there
var isbns = $.makeArray($("table tr td:nth-child(4)"));
for(var i in isbns) {
  isbns[i] = isbns[i].innerHTML;
  alert(isbns[i]);
}
//now isbns is an array which contains all isbns found in the table

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