jQuery删除类的最后一个孩子 [英] jQuery remove last-child of a class

问题描述

我正在处理动态表单，这些行具有父级下拉列表，并且当我们选择一个父级时，它将为子级数添加新的ROW，我为每个子级行指定了类.可以选择动态添加父行，依此类推.

I am working on a dynamic form, the rows are having parent dropdowns, and when we select a parent it adds new ROWs for number of childs, I have given classes to each child rows. There is option of dynamically adding a parent row, and so on.

到目前为止，添加和删除父行工作正常.我无法删除最后一个子行

So far adding and deleting the parent rows are working fine. I am having trouble removing the last child row

下面是关于如何创建行的粗略想法

below is a rough idea of how the rows are created, the

  Row 1: <parent> select
  Row 2: -<child> select
  Row 3: -<child> select
  Row 4: - Child Add row / Remove row
  Row 5: <parent> select
  Row 6: -<child> select
  Row 7: - Child Add row / Remove row
  Row 8: Parent Add row / remove row

更好的主意是屏幕截图

此表很简单，没有嵌套表，只有6列和12行，通过CSS缩进

This table is simple, no nested tables, only 6 columns and 12 rows, the indenting is done via css

现在，如果我在萤火虫控制台中使用$('tr.partnumber_2_sub');，我可以看到类似的结果

Now if I use $('tr.partnumber_2_sub'); in console of firebug, i can see result like

Object[tr.partnumber_2_sub, tr.partnumber_2_sub, tr.partnumber_2_sub]

但是当我使用$('tr.partnumber_2_sub:last-child');时，它会输出空对象.我想删除最后一个孩子，我猜是$('tr.partnumber_2_sub:last-child').remove();，但是它不起作用.

but when i use $('tr.partnumber_2_sub:last-child'); it output empty object. I want to remove the last child and my guess was to $('tr.partnumber_2_sub:last-child').remove(); but it is not working.

编辑

感谢最后一行的答案，但我意识到我的孩子添加行/删除行在tr上也有相同的类.现在我必须删除倒数第二个元素

Thanks for the answers for the last row, but i realized that my child add row / del row are also having same class on tr. Now i have to remove 2nd last element

编辑

好的，我在子行的tr上添加了额外的类，并且没有添加子行的添加/删除，所以现在我可以单独使用它们了.改回标题并接受答案.

Okay, i have added extra class on tr of child row, and didnt added it add / del of child so now I can use them separately. changed back the title and accepted the answer.

比大家

推荐答案

尝试

$('tr.partnumber_2_sub').last().remove()

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