JQuery选择td中的一个元素

问题描述

我想在我的表的td中选择一个元素，但我真的不理解语法。
这是我试过的：

  $（table> td：#box）
  

这是我的表结构示例：

 < div id =main> 
< div id =today> 
< table id =listwidth =100％cellpadding =4cellspacing =0border =0style =font-size：10px; border-collapse：collapse;> ; 
< tr id =109008> 
< td class =tdstd> 
< a class =boxhref =link>< / a> 
< / td> 
  

或使用Chrome的DOM检查器：

解决方案

很好，#box是指具有ID框的DOM对象，因为它是一个唯一的ID。您可以直接选择那个。但是你的代码建议你有几个元素的id框，你必须更改。你应该在TD中为你的元素分配一个类，或者如果它是唯一的DIV或者SPAN，你可以这样访问它：

  $（table td .box）
  

>选择器意味着TD必须是TABLE的直接子对象，并且我假设您之间至少有一个TR级别，因此也不会工作。我上面的例子匹配每个元素在任何TD内的任何TD的类框是任何TABLE的子。

显然，我将在表上设置一个类，并使用这样的：

  $（table.boxes td .box）
  
 
 
 
因此，您不会意外地选择您想要使用的范围之外的内容。
 
 
 
 
 
 
您现在已添加HTML，因此我正在编辑我的答案：
  $（table＃list a.box）
  
 
I would like to select an element inside the td of one of my tables  but I don't really understand the syntax.This is what I tried:
$("table > td:#box")
This is a sample of my table structure:
<div id="main">
<div id="today">
    <table id="list" width="100%" cellpadding="4" cellspacing="0" border="0" style="font-size: 10px; border-collapse:collapse;">
    <tr id="109008">
    <td class="tdstd">
    <a class="box" href="link"></a>
    </td>
Or With Chrome's DOM inspector:
 解决方案 
Well, "#box" means a DOM object with the id "box", as in it being a unique ID. You can select that one directly. But your code suggest that you have several elements with the id "box" which you have to change. You should assign a class to your element inside the TD, or if it's unique by being the only DIV or SPAN in the box, you can access it like this:
$("table td .box")
Note that the ">" selector means that TD has to be a direct child of TABLE, and I'm assuming you have at least a TR level in between, so that won't work either. My example above matches every element with the class "box" inside any TD that is a child to any TABLE.
Obviously I would set a class on the table as well, and use something like this:
$("table.boxes td .box")
Just so you don't accidentally selects things outside the scope you want to work in.
You have now added HTML so I'm editing my answer:
$("table#list a.box")
                        
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