Analysis of the reasons for repeated jumps in uniapp

Uniapp is a cross-platform development framework. It uses vue-like syntax for development and supports sharing code on different platforms, which is convenient and fast. However, in some cases, uniapp will have repeated jump problems, causing some trouble to developers. This article will analyze the reasons why uniapp jumps repeatedly and provide solutions.

1. Reasons for repeated jumps of uniapp

1. The same route exists in the routing stack

The main reason for repeated jumps is that the same route exists in the routing stack . In uniapp, when the user jumps, the route is automatically added to the stack so that the user can use the return button of the navigation bar to return to the previous page. However, sometimes users perform repeated jump operations, which will cause the same route to exist in the routing stack. At this time, when returning to the previous page, they will jump to the same page, causing problems in user experience.

2. Repeated clicks trigger the same route

Sometimes users will click on a certain navigation menu repeatedly. At this time, the same route will be triggered repeatedly, resulting in a stacking effect on the page. , the user cannot exit normally. In this case, once the user selects the return button, there will be a problem of repeated jumps.

3. The page switching speed is too fast

In some scenarios, because the page switching speed is too fast, the user will click multiple times and jump repeatedly. In this case, the user needs to wait for a while for the page jump to complete before proceeding. However, many users do not have such patience and will click repeatedly and cause repeated jumps.

4. Duplicate loading of components caused by using v-if or v-show

Using v-if or v-show can perform conditional display of components, but improper use can also cause components to be loaded. Repeated loading and destruction. When a component is frequently displayed and hidden, it will cause the component to be loaded and destroyed repeatedly, which will cause the page to freeze and slow down, and cause repeated jump problems.

2. Solution

1. Use the uni.navigateTo method instead of the uni.switchTab method

In uniapp, the switchTab method is used to perform routing jumps in tabBar. The navigateTo method is used for ordinary page jumps. If the user repeatedly clicks a menu in the tabBar, the switchTab method will be triggered repeatedly, causing the page to jump repeatedly. The solution is to use the navigateTo method instead of the switchTab method to jump to the page.

2. Set a unique path for each route

In uniapp, each route has a path attribute that is used to identify the uniqueness of this route. If different routes use the same path, the same route will exist in the routing stack, causing repeated jump problems. Therefore, setting a unique path for each route can effectively avoid this problem.

3. Set the delay time for routing jumps

In some scenarios, because the page switching speed is too fast, the user will click repeatedly and the problem of repeated jumps will occur. The solution is to set a certain delay time before the route jumps, and wait for the page to be completely switched before proceeding.

4. Reasonable use of v-if and v-show

When using v-if and v-show, you need to avoid repeated loading and destruction of components, otherwise it will cause the page to freeze. and slowed down, causing repeated jump issues. The solution is to set the key attribute on the component to uniquely identify each component. In this way, when components are frequently displayed and hidden, repeated loading and destruction of components can be avoided and the performance of the page can be improved.

In short, repeated jumps are a common problem in uniapp development, which requires our attention and timely resolution. By rationally using route jump methods, setting route unique identifiers, delaying jump time, and rational use of v-if and v-show, etc., you can avoid the problem of repeated jumps in uniapp and improve user experience.

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