Vue flashes white after jumping

Vue is a popular JavaScript framework for building single-page applications (SPA) and complex user interfaces. However, when using Vue to develop applications, you may encounter some strange problems, such as a flashing white screen after jumping to the page. This problem is annoying because it affects not only the user experience, but also the performance and reliability of the application.

In this article, we will explore the causes and solutions to this problem. We will introduce the common causes and solutions of a white screen after jumping to the page to help Vue developers solve this problem.

1. Cause

In a Vue application, when we navigate to a new route, Vue asynchronously loads the components and data of the page. This process takes some time, and when the page is not fully loaded, we will see a blank page. This is because Vue will first clear the content on the DOM before loading components and data to ensure that the page does not have bad rendering issues.

This process itself is not the source of the problem, but the reason why the page flashes white is that the user waits too long or the page loading process is interrupted (such as clicking a navigation link and the page jumps to another page) ). At this time, the Vue page will scroll back and display a blank page, which will make users feel very confused and dissatisfied.

2. Solution

There are many methods you can use when solving this problem. In the following paragraphs, we will discuss some common solutions.

2.1. Add a loading indicator

The first solution is to add a loading indicator, which is usually displayed in the center of the page to tell the user that the page is loading. This way, users will no longer see a white screen as they will see a loading icon or message.

To implement this solution, we can use the 'beforeEach' guard in Vue Router. In this guard, we can add a global fade-in animation or a loading indicator. This way, when the route changes, the user will see the specified animation or indicator. This lets the user know that the page is still loading and should wait for the page to finish loading.

2.2. Reduce page loading time

Page loading time is also one of the reasons for the white screen problem. If your application pages have more dependencies, the page load time may be longer. To solve this problem, you may consider reducing the number of dependencies or loading dependencies by using asynchronous loading of modules. This way, page load times will be greatly reduced and the chance of a white screen will be reduced.

2.3. Using asynchronous components

In Vue 2.x, Vue provides the function of asynchronous components. Asynchronous components allow us to delay the loading time of a component until the component is actually needed for use. In async components, we can add the component to a separate JavaScript file and load that file when needed.

Using asynchronous components can reduce page loading time and avoid white screen problems. In Vue, asynchronous components are very easy to use. Just register the component as a functional component and return the component loaded when needed.

2.4. Using the keep-alive tag

The keep-alive tag in Vue allows us to cache state between components so that the page loads faster on subsequent requests. The Keep-alive tag caches the component's state and DOM elements so that the next time the component is loaded, it does not have to be re-rendered, thereby reducing page load time.

Using the keep-alive tag can also reduce the number of page re-renders, thereby improving performance and user experience. In Vue, the keep-alive tag is very easy to use. You only need to include the components that need to be cached in the keep-alive tag.

3. Summary

During the Vue development process, the page flashing problem is a very common problem. However, it is important to understand the cause and solution of this problem to improve page performance and user experience. We can easily solve this problem by adding a loading indicator, reducing page load time, using asynchronous components, and using keep-alive tags. As a result, we can build a better user experience for Vue applications and improve application performance and reliability.

The above is the detailed content of Vue flashes white after jumping. For more information, please follow other related articles on the PHP Chinese website!