微信小程序开发错误：Uncaught FrameworkError: module "pages/mydemo/index.js" is not defined - 解决方法

The error message suggests that there is an issue with the module definition or require statement in the file "pages/mydemo/index.js". The specific error is related to the module "pages/mydemo/index.js" not being defined or not being found.

To troubleshoot this issue, you can check the following:

1. Make sure that the file "pages/mydemo/index.js" exists in the correct location in your project.

2. Verify that the module is correctly defined in the "pages/mydemo/index.js" file. Check for any syntax errors or missing dependencies.

3. Double-check the require statement that is causing the error. Ensure that the path to the module is correct and matches the actual file location.

4. If you are using a development server or bundler, make sure that the file "pages/mydemo/index.js" is included in the build process and is accessible to the runtime environment.

By reviewing these points, you should be able to identify and resolve the issue with the module definition or require statement.