How to use jQuery to hide li element in ul

jQuery is a popular JavaScript library that can manipulate HTML elements with some simple code. In web design, lists are often used, such as ul, ol, etc. In some cases, we need to hide these list elements, in which case we need to use jQuery's hide() function. In this article, we will introduce how to use jQuery to hide li elements in ul.

1. Introducing the jQuery library

First, we need to introduce the jQuery library into the HTML file. We can download the latest version of jQuery file from the official website https://jquery.com/, and introduce it in the HTML file:

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

Then you can use the jQuery library in the web page.

2. HTML Structure

Next, we need to create a ul list and add some li elements in it. Here is an example HTML code:

<ul>
  <li>列表项1</li>
  <li>列表项2</li>
  <li>列表项3</li>
</ul>

3. Using jQuery to hide li elements

After introducing the jQuery library in the HTML file and creating the ul list, we can use the following code To hide the li element:

$(document).ready(function(){
  $("li").hide();
});

In the above code, $(document).ready() is a commonly used jQuery function, which is used to execute the code after the page is loaded. $("li") is used to select all li elements. The $ symbol is a shortcut for jQuery, which is equivalent to executing jQuery("li"). .hide() is a function provided by jQuery for hiding elements.

4. Specify the li elements to be hidden

In actual applications, we may only need to hide some li elements, not all. At this time, we can use CSS selectors to specify the elements to be hidden. For example, we can use the following code to hide the second li element:

$(document).ready(function(){
  $("li:nth-child(2)").hide();
});

In the above code, :nth-child(2) means selecting the second li element in the ul list .

5. Conclusion

Using jQuery’s hide() function can easily hide the li element in the ul list. We can choose to hide all or specify elements to hide. In web design, this operation is very common. Through this method, we can more flexibly control the display and hiding of web content.

This article only introduces the basic usage of jQuery to hide the li element in the ul list. Readers can conduct more exploration and research according to actual needs.

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