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How to use HTML, CSS and jQuery to implement advanced functions of automatically hiding scroll bars

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Oct 27, 2023 pm 04:36 PM

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How to use HTML, CSS and jQuery to implement advanced functions of automatically hiding scroll bars

How to use HTML, CSS and jQuery to implement the advanced function of automatically hiding scroll bars

In web development, we often use scroll bars to help users browse long Page content. However, traditional scroll bars will always be displayed on the page by default, which sometimes affects the user's visual experience. In order to improve the aesthetics of the user interface, we can use HTML, CSS and jQuery to implement the advanced function of automatically hiding scroll bars. This article describes how to use these three technologies to achieve this functionality, and provides specific code examples.

First, we need to create a basic page structure using HTML. Add a container element in the body tag to contain the content of the page. As shown below:

<!DOCTYPE html>
<html>
<head>
  <title>自动隐藏滚动条</title>
  <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
  <div class="container">
    <!-- 页面内容 -->
  </div>

  <script src="jquery.js"></script>
  <script src="script.js"></script>
</body>
</html>

Next, we need to use CSS to define the style of the container element and hide the default scrollbar. Add the following code to the style.css file:

.container {
  width: 100%;
  height: 100vh;
  overflow: auto;
}

.container::-webkit-scrollbar {
  width: 8px;
  background-color: #f5f5f5;
}

.container::-webkit-scrollbar-thumb {
  background-color: #888;
}

.container::-webkit-scrollbar-thumb:hover {
  background-color: #555;
}

In the above code, we use the ::webkit-scrollbar pseudo-element to define the style of the scroll bar. Among them, the width attribute defines the width of the scroll bar, the background-color attribute defines the background color of the scroll bar, and the background-color attribute defines the foreground color of the scroll bar.

Then, we use jQuery to detect whether the container element needs to display the scroll bar and realize the automatic hiding effect of the scroll bar. Add the following code to the script.js file:

$(document).ready(function() {
  $('.container').scroll(function() {
    if ($(this).scrollTop() > 0) {
      $('.container::-webkit-scrollbar').addClass('show');
    } else {
      $('.container::-webkit-scrollbar').removeClass('show');
    }
  });
});

In the above code, we use the scroll event to detect the position of the scroll bar. If the value of scrollTop() is greater than 0, it means that the scroll bar has been scrolled, and we display the scroll bar by adding the show class; otherwise, we hide the scroll bar by removing the show class.

Finally, we need to create a jQuery plug-in to automatically initialize the scroll bar function in the page so that it can be used in other pages. Add the following code to the script.js file:

$.fn.autoHideScrollbar = function() {
  $(this).scroll(function() {
    if ($(this).scrollTop() > 0) {
      $(this).find('::-webkit-scrollbar').addClass('show');
    } else {
      $(this).find('::-webkit-scrollbar').removeClass('show');
    }
  });
};

$(document).ready(function() {
  $('.container').autoHideScrollbar();
});

In the above code, we created a jQuery plug-in named autoHideScrollbar and encapsulated the initialization logic of the scroll bar in it. Then, call the plug-in in the document.ready event to initialize the scroll bar functionality in the page.

Through the above steps, we have successfully implemented the advanced function of automatically hiding scroll bars using HTML, CSS and jQuery. When the user scrolls the page, the scroll bar will automatically show or hide, which improves the aesthetics and user experience of the page. Readers can modify the style according to their own needs and integrate the code into their own projects. Hope this article is helpful to you!

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