uniapp does not refresh after modifying the code

If you use Uniapp for mobile application development, you may have encountered a problem: you modified the code, but when you run the application, the code is not refreshed, and it persists even after recompiling and building. This can be frustrating because you need to open the project again or try to clear the cache to update the code. In this article, we will analyze the causes of this problem and provide some possible solutions.

Cause of the problem

In Uniapp, the application is a web application running in the local browser. When you edit code, your application is recompiled and then restarted. However, sometimes your changes don't seem to take effect. This may be because the browser or application caches your code.

Typically when you make changes to your application code, you can resolve this issue by clearing your browser cache, updating the code, and then restarting the application. But sometimes this doesn't work because Uniapp stores the code in memory, not on local disk.

Therefore, if you are using the Uniapp development environment, you need to ensure that your changes are saved and the application is restarted. Otherwise, your application will continue to run the old version of the code. If you are using the Uniapp packaging environment, you will need to ensure that your changes are saved and the application is rebuilt to ensure that the changes take effect.

Possible solutions

1. Use hot update

Uniapp's hot update feature allows you to update the application code while the application is running, without requiring a restart application or clear browser cache. This saves you time and makes updates more convenient.

Hot updates can be accomplished by using special update commands in your code. This command will send a request to the application and download new code on the server. Once the code download is complete, your application will automatically refresh to show the new changes.

To use hot updates, please make sure you have enabled the feature in your app and that you are using the latest version of Uniapp.

2. Clear the browser cache

If you cannot use hot update, or you need to update the Uniapp version, you can try to clear the browser cache. This will ensure your application is using the latest code and your changes will take effect.

To clear your browser cache, you can follow these steps:

• In your browser, open your application.
• Press F12 to open the browser's developer tools.
• Click the "Network" tab and select the "Disable cache" option.
• Click the "Console" tab and enter the following command: location.reload(true).
• The application will restart with the latest version of the code loaded.

3. Force refresh

Sometimes, clearing the browser cache doesn’t work either. In this case, you can try using force refresh. By pressing the Ctrl F5 key combination on your keyboard, you can tell the browser to force refresh the current page and load all new code and resources. This will ensure that your application uses the latest code and is updated with your changes.

In short, if your Uniapp code is not updated in time, you can try to use hot update, clear browser cache or force refresh to solve the problem. If none of these solutions work, you may need to restart your application or clear your browser cache to see your changes.

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