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HomeBackend DevelopmentPHP TutorialHow to solve the stuck problem of long list scrolling in Vue development

With the development of mobile and web applications, more developers are beginning to choose to use the Vue framework to build their applications. Vue provides many powerful features and tools that allow developers to build responsive and interactive interfaces more quickly.

However, when we encounter the requirement of scrolling a long list in Vue development, stuck problems often occur. This is because when we have a large amount of data to display in the list, frequent updates and rendering of the DOM will cause performance degradation. In this article, we will discuss some ways to solve the problem of stuck scrolling in long lists.

  1. Using virtual lists
    Virtual lists are a technique that only renders list items in the visible area in a scrolling container. It improves performance by dynamically loading and unloading list items. Vue provides some virtual list components, such as vue-virtual-scroller and vue-virtual-scroll-list. These components can automatically determine and render visible list items based on the visible area of ​​the scroll container, thus avoiding rendering the entire list.
  2. Using keep-alive
    keep-alive is a component provided by Vue, which can cache dynamic components or component trees into memory, thereby avoiding performance loss every time the component is re-rendered. We can treat each list item of the long list as a component and wrap keep-alive around the list item. In this way, when scrolling the list, only the currently visible list items will be rendered and updated, and other list items will be cached, greatly improving the scrolling performance.
  3. Using asynchronous update
    If our long list does not need to respond to user interaction in real time when data is updated, we can use asynchronous update to improve performance. Vue provides some asynchronous update methods, such as nextTick and setImmediate. By placing the data update operation in an asynchronous function, the DOM update can be postponed to the next event loop cycle, thereby avoiding frequent updates and rendering of the DOM and improving the smoothness of scrolling.
  4. Using responsive properties
    In Vue, we can use the computed property to define some responsive computed properties. If each list item of our long list depends on the change of some state, we can define this state as a computed property. In this way, when this state changes, Vue will automatically calculate the relevant list items without updating the entire list. This approach can reduce unnecessary rendering and improve performance.
  5. Use a more efficient list rendering method
    Vue provides two ways to render lists, namely v-for and v-repeat. v-for is a commonly used way to render lists, but it may cause performance issues when rendering large amounts of data. In contrast, v-repeat is a more efficient way of rendering lists. It uses a single element to render the entire list, thus avoiding the need to render each list item and improving performance.

To sum up, the key to solving the stuck problem of long list scrolling is to improve performance by optimizing rendering and updating. Virtual lists, keep-alives, asynchronous updates, reactive properties, and more efficient list rendering methods are all possible methods. At the same time, we can also use these methods in combination to select appropriate solutions based on specific needs and scenarios. Through these optimizations, we can improve the performance and user experience of long list scrolling in Vue development.

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