Jquery tutorial: Implementing the interlaced color changing function of web pages

jQuery Tutorial: Implementing the interlaced color changing function of web pages

In web development, we often encounter the need to interlaced elements such as tables and lists. Color change is required to improve the readability and aesthetics of the page. It is very simple to use jQuery to realize the interlaced color change function of web pages. The specific implementation method will be introduced below, with code examples attached.

1. Introduce the jQuery library

To use jQuery in a web page, you first need to introduce the jQuery library. It can be imported through CDN or downloaded locally. Add the following code in the

tag:

<script src="https://cdn.staticfile.org/jquery/3.5.1/jquery.min.js"></script>

2. Write jQuery code

Next, write jQuery code to implement the interlaced color changing function of the web page. Add the following code in the <script> tag: </script>

$(document).ready(function(){
    // 选取需要进行隔行变色的元素，例如表格中的每一行
    $("table tr:even").css("background-color", "#f5f5f5");
    $("table tr:odd").css("background-color", "#ffffff");

    // 或者选取列表中的每个列表项
    $("ul li:even").css("background-color", "#f5f5f5");
    $("ul li:odd").css("background-color", "#ffffff");
});

The above code uses jQuery's selector to select odd and even rows in the table or list, and sets different background colors for them, thereby achieving the effect of alternating rows of color. . The specific implementation idea is to use the :even and :odd pseudo-class selectors to select odd-numbered rows and even-numbered rows respectively, and set different styles for them.

3. Sample code

The following is a complete web page sample code, including the implementation code of introducing jQuery library and interlaced color changing function:

    
    
    <script src="https://cdn.staticfile.org/jquery/3.5.1/jquery.min.js"></script>
    


    
隔行变色示例
    

        

            
姓名
            
年龄
        
        

            
小明
            
18
        
        

            
小红
            
20
        
        

            
小亮
            
22
        
        

            
小刚
            
25
        
    

    <script>
        $(document).ready(function(){
            $("table tr:even").css("background-color", "#f5f5f5");
            $("table tr:odd").css("background-color", "#ffffff");
        });
    </script>

Through the above sample code, you You can implement the interlaced color changing function in your own web pages to improve the visual effects and user experience of the page. Hope this tutorial is helpful, thank you for reading!

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