Select First Occurring Element After Another Element

Select first occurring element after another element

#many .more.selectors h4 + p { ... }

This is called the adjacent sibling selector.

Selecting the direct first element after another element in CSS

You can use an adjacent sibling combinator:

#text + span {
    /* Styles */
}

Here's a working example.

Update (see comments)

To target the second span you can simply add another adjacent sibling combinator to the selector:

#text + span + span {
    /* Styles */
}

Select an element after another element in JavaScript

The next element is stored in nextElementSibling property of the specific element on javascript.

Jquery, select first next element after all anchors with same class

You can use the next sibling selector + to target the ul directly after the class elements.

console.log(  $('.some_anchors + ul').get());

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script><a class="some_anchors"></a><ul id="ul_1"></ul><ul class="not-me"></ul>
<a class="some_anchors"></a><ul id="ul_2"></ul><ul class="not-me"></ul>
<a class="some_anchors"></a><ul id="ul_3"></ul><ul class="not-me"></ul>
<a class="some_anchors"></a><ul id="ul_4"></ul><ul class="not-me"></ul>

CSS selector for first element with class

This is one of the most well-known examples of authors misunderstanding how :first-child works. Introduced in CSS2, the :first-child pseudo-class represents the very first child of its parent. That's it. There's a very common misconception that it picks up whichever child element is the first to match the conditions specified by the rest of the compound selector. Due to the way selectors work (see here for an explanation), that is simply not true.

Selectors level 3 introduces a :first-of-type pseudo-class, which represents the first element among siblings of its element type. This answer explains, with illustrations, the difference between :first-child and :first-of-type. However, as with :first-child, it does not look at any other conditions or attributes. In HTML, the element type is represented by the tag name. In the question, that type is p.

Unfortunately, there is no similar :first-of-class pseudo-class for matching the first child element of a given class. At the time this answer was first posted, the newly published FPWD of Selectors level 4 introduced an :nth-match() pseudo-class, designed around existing selector mechanics as I mentioned in the first paragraph by adding a selector-list argument, through which you can supply the rest of the compound selector to get the desired filtering behavior. In recent years this functionality was subsumed into :nth-child() itself, with the selector list appearing as an optional second argument, to simplify things as well as averting the false impression that :nth-match() matched across the entire document (see the final note below).

While we await cross-browser support (seriously, it's been nearly 10 years, and there has only been a single implementation for the last 5 of those years), one workaround that Lea Verou and I developed independently (she did it first!) is to first apply your desired styles to all your elements with that class:

/* 
 * Select all .red children of .home, including the first one,
 * and give them a border.
 */
.home > .red {
    border: 1px solid red;
}

... then "undo" the styles for elements with the class that come after the first one, using the general sibling combinator ~ in an overriding rule:

/* 
 * Select all but the first .red child of .home,
 * and remove the border from the previous rule.
 */
.home > .red ~ .red {
    border: none;
}

Now only the first element with class="red" will have a border.

Here's an illustration of how the rules are applied:

.home > .red {
    border: 1px solid red;
}

.home > .red ~ .red {
    border: none;
}

<div class="home">
  <span>blah</span>         <!-- [1] -->
  <p class="red">first</p>  <!-- [2] -->
  <p class="red">second</p> <!-- [3] -->
  <p class="red">third</p>  <!-- [3] -->
  <p class="red">fourth</p> <!-- [3] -->
</div>

jquery selecting any first p element after an heading whether another element is also there

It's not working as expected because .next('p') will only select the immediately following p element. You could use the .nextAll() method to select all the following p elements (not just the immediately following one), then chain the .first() method to get the first match in the collection:

Example Here

$('h3, h2').each(function () {
  $(this).nextAll('p').first().css({ "color":"green"});
});

CSS Selector - first element with Class in a group of same class

To select first child of the ul element, you can use :first-child pseudo-class.

To select the first element in each group, you can use adjacent sibling selector.

.A + .B will select any element with class B that immediately follows an element with class A. Similarly .B + .A will select any element with class A that immediately follows an element with class B

.A { background: red; }.B { background: blue; }
.A:first-child,.B + .A,.A + .B {  background: yellow;}

<ul class="list">  <li class="item A">AAA</li><!-- I want to select this -->  <li class="item A">AAA</li>  <li class="item A">AAA</li>  <li class="item B">BBB</li><!-- I want to select this -->  <li class="item B">BBB</li>  <li class="item B">BBB</li>  <li class="item A">AAA</li><!-- I want to select this -->  <li class="item A">AAA</li>  <li class="item A">AAA</li></ul>

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