How to delete selected elements with jQuery? Brief analysis of methods

With the continuous development of front-end technology, jQuery has become one of the most commonly used frameworks in front-end development. The emergence of jQuery not only simplifies the cumbersome JavaScript syntax, but also makes developers more efficient and convenient when manipulating the DOM.

In jQuery, deleting selected elements is also very simple. We only need to use the .remove() method to achieve it. Below, this article will introduce in detail how to delete selected elements in jQuery.

1. Delete a single element

First, let’s take a look at how to delete a single element. Suppose we have an html document structure as shown below:

<ul>
  <li>小明</li>
  <li>小刚</li>
  <li>小红</li>
</ul>

If we want to delete one of the li elements, we can use jQuery's .remove() method and pass in the element that needs to be deleted as a parameter . The following is a sample code to delete the second li element:

$("ul li:eq(1)").remove();

In the above code, we first select all li elements under the ul element, and then use the :eq() method to select the elements that need to be deleted ( Here it is the second li element), and finally use the remove() method to perform the deletion operation.

2. Delete multiple elements

In addition to deleting a single element, we can also use the .remove() method to delete multiple elements. For example, we have the following html document structure:

<div class="box">
  <p>段落1</p>
  <p>段落2</p>
  <p>段落3</p>
</div>

If we want to delete all p elements, we can use the following code:

$(".box p").remove();

In the above code, we first select class as the box element, and then select all p elements below for deletion.

3. Delete an element and return the content of the element

In addition to simply deleting an element, we sometimes also need to return its content. At this time, we can use the .detach() method. For example, we have the following html document structure:

<div class="box">
  <p>文章1</p>
  <p>文章2</p>
  <p>文章3</p>
</div>

If we want to delete all p elements and return their contents, we can write like this:

var removed_elements = $(".box p").detach();

In the above code, we first select For the element whose class is box, then select all p elements under it and perform the deletion operation. Finally, obtain the content of the deleted element by assigning the return value to a variable.

Summary

This article introduces jQuery's methods of deleting selected elements, including deleting a single element, deleting multiple elements, and deleting an element and returning its content. I believe that through the introduction of this article, readers can already master these methods and apply them flexibly in development. At the same time, I also hope that readers can continue to learn more about jQuery and apply it in actual development.

The above is the detailed content of How to delete selected elements with jQuery? Brief analysis of methods. For more information, please follow other related articles on the PHP Chinese website!