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How to get next child tag using jquery

PHPz

May 28, 2023 pm 08:55 PM

When using jQuery for front-end development, it is often necessary to obtain the next sub-tag based on the previous element. At this time, you can use some jQuery methods to get the next subtag. This article will introduce how to use jQuery to get the next subtag.

First of all, we need to make it clear, what is a subtag? A child tag is the first element below the parent node or a child element of a specified tag, that is, it is located at the child element position of the parent element in HTML.

In jQuery, we can use the next() method to get the next sibling tag. For example:

<div class="parent">
  <h3 id="这是一个标题">这是一个标题</h3>
  <p>这是一段文字。</p>
  <ul>
    <li>列表项 1</li>
    <li>列表项 2</li>
  </ul>
</div>

var nextElement = $(".parent").next();

In the above code, we found the div element with class as parent, and found it behind this element Next element h3.

If you want to get a specific next element, you can pass in the specified element in the next() method, for example:

var nextElement = $(".parent").next("h3");

In this example, we The div element whose class is parent is still found, but there may be other elements behind it. At this time, we only want to find h3 element, you can search by passing the specified element name in the next() method.

In addition to the next() method, we can also use the nextAll() method to get all elements after the specified element. For example:

var nextElements = $(".parent").nextAll();

In this example, we found the div element whose class is parent, and all sibling elements behind this element will be found.

In the nextAll() method, we can also pass in the specified element to get the specified element behind it. For example:

var nextElements = $(".parent").nextAll("h3");

This code will find all h3 elements after the div element with class being parent.

In addition to the next() and nextAll() methods, we can also use the find() method to find child elements. For example:

var nextElements = $(".parent").find("ul");

In this example, we find the div element whose class is parent, and then in all the children of this element Find the ul element in the element and assign it to the nextElements variable.

To summarize, in the process of using jQuery to get the next child tag, we can use the next() method to get the next sibling tag, and use nextAll() The method obtains all elements after the specified element and uses the find() method to find sub-elements. By using it, you can easily and flexibly operate page elements, helping us complete more professional front-end page development.

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