A brief analysis of how to implement scrolling hidden navigation in PHP (code example)

In web design, the navigation bar is one of the important components of the web page. Its function is to facilitate users to access different pages and functions. However, for some projects that need to maintain the aesthetics and simplicity of the page, scrolling is often used to hide the navigation. This technique can both improve user experience and save page space. In this article, we will share some implementation methods of scrolling hidden navigation code based on PHP language, and introduce how to customize your own navigation bar.

1. Implementation principle of scrolling hidden navigation

Scrolling hidden navigation means that when the user scrolls down the page, the navigation bar is automatically hidden at the top and can be easily restored when needed. This technology can be implemented through some JS libraries, such as jQuery, etc. However, we can also achieve this functionality through PHP. The specific implementation method is as follows:

1. Get the height of the scrolling page. You can use the following code to get it:

$scrollHeight = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : " http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

2. Determine the scroll height. For example, when the user scrolls the page to 200px, the navigation bar begins to hide and redisplays when the page scrolls to the target DOM element. This can be achieved using the following methods:

if ($scrollHeight >= 200) {$hideNav = true;} elseif ($scrollHeight < 200) {$hideNav = false;}

3. Use CSS to control the hiding and display of the navigation bar. The navigation bar can be hidden through the following styles:

nav {position: fixed; top: -50px; transition: top 0.3s;}

At the same time, we can display it through the following styles Navigation bar:

nav {position: fixed; top: 0; transition: top 0.3s;}

2. Customize your own navigation bar

Now, we have succeeded Implemented scrolling hidden navigation. Next, we can customize our own navigation bar through PHP. The following is a simple example:

1. First of all, it is recommended to write the navigation bar in a .php file, so that it can be modified later. For example:

<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Services</a></li>
<li><a href="#">Blog</a></li>
<li><a href="#">Contact</a></li>

2. Then, include this navigation bar file in your homepage (index.php). You can use the following code:

The above code includes the navigation bar file in index.php. In this way, every time you modify the navigation bar, you don't need to change the code of the homepage, you only need to modify navbar.php.

3. Conclusion

In this article, we introduced how to use PHP language to implement scrolling hidden navigation, and how to customize your own navigation bar. By using this technology, we can not only improve user experience and page aesthetics, but also save page space and make the page more commercially effective. Please note that when using this technology, please adhere to HTML and CSS standards to ensure website compatibility and accessibility.

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