javascript 如何从div中删除最后一个元素?
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How to remove last element from div?
提问by adolzi
I have list of descriptions and after remove one of them, I'd like to remove last element from div, not refreshing site. I don't know javascript in fact, so I'd like to ask how should my destroy.js.erb looks like? I can refresh whole class "descriptions" using
我有描述列表,删除其中一个后,我想从 div 中删除最后一个元素,而不是刷新站点。我其实不懂javascript,所以我想问一下我的destroy.js.erb应该是什么样子的?我可以使用刷新整个班级的“描述”
$('.descriptions').load(location.href + " .descriptions");
but I'm interested, if there is way to remove only last element.
但我很感兴趣,如果有办法只删除最后一个元素。
<div class="descriptions">
<%= render @descriptions %>
</div>
//_description.html.erb
<div class="description-field">
<%= @description.text %>
</div>
Thank you for any help
感谢您的任何帮助
回答by Cliff Gunn
<div class="parent">
<div class="child">
Item 1
</div>
<div class="child">
Item 2
</div>
<div class="child">
Item 3
</div>
</div>
The following line of jQuery would delete "Item 3."
以下 jQuery 行将删除“Item 3”。
$('.parent').children().last().remove();
回答by Luka Krajnc
Use css selector :last-child
to remove it (found here). Then use jQuery to remove last element.
使用 css 选择器:last-child
将其删除(在此处找到)。然后使用 jQuery 删除最后一个元素。
$(".yourdiv :last-child").remove();
Here is jsFiddleexample:
这是jsFiddle示例:
html:
html:
<div>
<p> Hello </p>
<p> World </p>
<p> last element </p>
</div>
JavaScript:
JavaScript:
$("div :last-child").remove();
回答by zeppelin
Use this if you want to remove the last div:
如果要删除最后一个 div,请使用此选项:
$("div:last").remove();
Use this if you want to remove the last sibling of some div with id "#mydiv"
如果要删除某个 id 为“#mydiv”的 div 的最后一个兄弟,请使用此选项
$('#mydiv:last-child')
回答by Brian Ombisa
<div id="parent">
<div id="child">
Item 1
</div>
<div id="child">
Item 2
</div>
<div id="child">
Item 3
</div>
</div>
The following is a JQuery code that removes the last child item 3
以下是移除最后一个子项3的JQuery代码
$("#child").remove();
or you can also use
或者你也可以使用
$("#child").css({"display": "none"});