How can I select the last element with a specific class, not last child inside of parent?
<div class="commentList">
<article class="comment " id="com21"></article>
<article class="comment " id="com20"></article>
<article class="comment " id="com19"></article>
<div class="something"> hello </div>
</div>
I want to select #com19 ?
.comment {
width:470px;
border-bottom:1px dotted #f0f0f0;
margin-bottom:10px;
}
.comment:last-child {
border-bottom:none;
margin-bottom:0;
}
That does not work as long as I do have another div.something as actual last child in the commentList. Is it possible to use the last-child selector in this case to select the last appearance of article.comment?
jsFid开发者_JAVA技巧dle
:last-child only works when the element in question is the last child of the container, not the last of a specific type of element. For that, you want :last-of-type
http://jsfiddle.net/C23g6/3/
As per @BoltClock's comment, this is only checking for the last article element, not the last element with the class of .comment.
body {
background: black;
}
.comment {
width: 470px;
border-bottom: 1px dotted #f0f0f0;
margin-bottom: 10px;
}
.comment:last-of-type {
border-bottom: none;
margin-bottom: 0;
}<div class="commentList">
<article class="comment " id="com21"></article>
<article class="comment " id="com20"></article>
<article class="comment " id="com19"></article>
<div class="something"> hello </div>
</div>I guess that the most correct answer is: Use :nth-child (or, in this specific case, its counterpart :nth-last-child). Most only know this selector by its first argument to grab a range of items based on a calculation with n, but it can also take a second argument "of [any CSS selector]".
Your scenario could be solved with this selector: .commentList .comment:nth-last-child(1 of .comment)
But being technically correct doesn't mean you can use it, though, because this selector is as of now only implemented in Safari.
For further reading:
- https://drafts.csswg.org/selectors-4/#the-nth-child-pseudo
- http://caniuse.com/#search=nth-child
If you are floating the elements you can reverse the order
i.e. float: right; instead of float: left;
And then use this method to select the first-child of a class.
/* 1: Apply style to ALL instances */
#header .some-class {
padding-right: 0;
}
/* 2: Remove style from ALL instances except FIRST instance */
#header .some-class~.some-class {
padding-right: 20px;
}
This is actually applying the class to the LAST instance only because it's now in reversed order.
Here is a working example for you:
<!doctype html>
<head><title>CSS Test</title>
<style type="text/css">
.some-class { margin: 0; padding: 0 20px; list-style-type: square; }
.lfloat { float: left; display: block; }
.rfloat { float: right; display: block; }
/* apply style to last instance only */
#header .some-class {
border: 1px solid red;
padding-right: 0;
}
#header .some-class~.some-class {
border: 0;
padding-right: 20px;
}
</style>
</head>
<body>
<div id="header">
<img src="some_image" title="Logo" class="lfloat no-border"/>
<ul class="some-class rfloat">
<li>List 1-1</li>
<li>List 1-2</li>
<li>List 1-3</li>
</ul>
<ul class="some-class rfloat">
<li>List 2-1</li>
<li>List 2-2</li>
<li>List 2-3</li>
</ul>
<ul class="some-class rfloat">
<li>List 3-1</li>
<li>List 3-2</li>
<li>List 3-3</li>
</ul>
<img src="some_other_img" title="Icon" class="rfloat no-border"/>
</div>
</body>
</html>
Something that I think should be commented here that worked for me:
Use :last-child multiple times in the places needed so that it always gets the last of the last.
Take this for example:
.page.one .page-container .comment:last-child {
color: red;
}
.page.two .page-container:last-child .comment:last-child {
color: blue;
}<p> When you use .comment:last-child </p>
<p> you only get the last comment in both parents </p>
<div class="page one">
<div class="page-container">
<p class="comment"> Something </p>
<p class="comment"> Something </p>
</div>
<div class="page-container">
<p class="comment"> Something </p>
<p class="comment"> Something </p>
</div>
</div>
<p> When you use .page-container:last-child .comment:last-child </p>
<p> you get the last page-container's, last comment </p>
<div class="page two">
<div class="page-container">
<p class="comment"> Something </p>
<p class="comment"> Something </p>
</div>
<div class="page-container">
<p class="comment"> Something </p>
<p class="comment"> Something </p>
</div>
</div>The new :has() pseudo class (not yet supported by all browsers) lets you get pretty close to a solution:
.class:has(+ :not(.class))
The limitation is that this will find any element with .class which is followed by an element that doesn't have this class. But this would match the use case of the question.
What about this solution?
div.commentList > article.comment:not(:last-child):last-of-type
{
color:red; /*or whatever...*/
}
This can now be solved with careful use of :has(), specifically:
/* switch out the {class} below */
.{class}:not(:has(~ .{class}))
A similar technique also allows you to select anything but the last occurrence of a class in a container, or the last occurrence within a group of elements. See the snippet below for examples.
Note: has() is currently supported in Chrome, Edge and Safari, but not Firefox (Jan 2022)
/* last in group */
.class:has(+ :not(.class)) {
background: pink;
}
/* anything but last in container */
.class:has(~ .class) {
box-shadow: 0 0 0 1px #F00A;
}
/* last in container */
.class:not(:has(~ .class)) {
background: #0F0A;
}<div>
<div class="class">not-last</div>
<div class="class">not-last</div>
<div class="class">last-in-group</div>
<div>---</div>
<div class="class">not-last</div>
<div class="class">last-in-group</div>
<div>---</div>
<div class="class">last-class</div>
<div>---</div>
</div>There are two ways to select the last element of a class.
- Wrap your elements in a container element.
html:
<div class="container">
<div class="member">Member</div>
<div class="member">Member</div>
<div class="member">Member</div>
<div>
css:
.container:last-child {
color: red;
}
- If you don't want to wrap your elements within another element then you can leverage
last-of-type.
html:
<div class="member">Member</div>
<div class="member">Member</div>
<div class="member">Member</div>
css:
.member:last-of-type{
color: red;
}
加载中,请稍侯......
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