What are Crucial Things to Consider While Converting AngularJS Applications to Angular?
In this article, we will cover what you need to consider while converting AngularJS Application to Angular.
We strongly recommend that you hire Angular developers to help with the process.
If you hire Angular developers, they will update an old version of a program to a newer one. They can use tools and write code to make sure that the new version of the program is stable and works well.
Hire Angular developers to help move data and update things the program depends on. Angular developers also help with communication and keeping the project on track. They will ensure that the conversion process goes smoothly and doesn’t cause any problems with the program.
The following table provides an overview. The considerations are further explained in the article.
| Consideration | Description |
| Understand framework differences | Understand the differences between AngularJS and Angular before beginning the conversion process. Angular is a complete rewrite of AngularJS. |
| Upgrade gradually | Upgrade small parts of the application and test thoroughly before moving on to the next part. Do not try to upgrade the entire application all at once. |
| Use conversion tool | Use tools like ngUpgrade or the Angular Upgrade Guide to simplify the conversion process and save time. |
| Test thoroughly | Thoroughly test the upgraded application to ensure all features are working and there are no regressions. |
| Migrate data | If using a database, migrate data to a compatible database for Angular. |
| Update dependencies | Update any dependencies incompatible with Angular. |
| Update build process | Update the build process as needed to work with Angular. |
| Consider a modern JavaScript framework | Consider using a modern JavaScript framework such as React or Vue.js if considering a rewrite of the application. |
8 things you need to consider
- Learn the differences between AngularJS and Angular
Here is a table to help you understand the differences.
| Difference | AngularJS | Angular |
| Language | JavaScript | TypeScript |
| Syntax | AngularJS uses ng- prefix for directives | Angular uses camelCase syntax for directives |
| Components | AngularJS uses controllers and $scope | Angular uses components and directives |
| Dependency injection | AngularJS uses implicit dependency injection | Angular uses explicit dependency injection |
| Expression syntax | AngularJS uses {{ }} | Angular uses [()] |
| Services | AngularJS uses factory, service, provider | Angular uses services |
| Routing | AngularJS uses ngRoute | Angular uses @angular/router |
| Animation | AngularJS uses ngAnimate | Angular uses @angular/animations |
| Performance | AngularJS is slower than Angular | Angular is faster than AngularJS |
- Upgrade gradually
You should not try and upgrade the entire application all at once.
When you upgrade and test small parts of the application, you can ensure that the conversion process is manageable. Any issues can be identified and addressed early.
You can also hire Angular developers to help you. Since they have experience working with Angular, they will be able to help you upgrade your application efficiently and effectively.
They will also identify and solve any potential issues or challenges you may encounter during the conversion process.
Angular developers can also test the upgraded parts of the application. This ensures that each part is stable and reliable.
- Use a tool to help with the conversion.
You can use a tool such as the ngUpgrade library and the Angular Upgrade Guide.
- ngUpgrade – The package that is specifically designed to help with the process of upgrading an AngularJS application to Angular. The set of services and functions allows you to run both AngularJS and Angular components in the same application and to upgrade your application to Angular gradually.
- Angular Upgrade Guide 0 The Angular Upgrade Guide is a documentation resource that provides step-by-step instructions and best practices for upgrading an AngularJS application to Angular. You can learn how to prepare your application for the upgrade, run AngularJS and Angular side by side, and test and debug your upgraded application.
- Test thoroughly
Here are some ways to test an upgraded AngularJS application.
- Unit tests: Test small units of code, such as functions and methods, in isolation from the rest of the application. This ensures that individual parts of the application are working correctly.
- Integration tests: Test the interaction between different parts of the application. This ensures that the application is working as a whole and that there are no issues with the integration of different components.
- End-to-end tests: Test the application from the user’s perspective. This involves simulating user actions, such as clicking buttons and filling out forms, and verifying that the application responds as expected.
- Migrate your data.
Here are some ways to migrate your data.
- Use a database migration tool: Use tools like MySQL Workbench or DataGrip to migrate data from one database to another. These tools can save time and reduce the complexity of the migration process.
- Write custom scripts: You can also write custom scripts to migrate your data from one database to another. This can be a more time-consuming option, but it may be necessary if you have complex data structures or custom requirements.
- Manually migrate data: If you have a small amount of data, you may be able to manually migrate the data by exporting it from the AngularJS database and importing it into the Angular database. This can be a time-consuming option, but it may be suitable for small datasets.
- Update your dependencies.
Here are two ways to update your dependencies.
- Use a dependency manager: Use dependency managers like npm or yarn to manage and update dependencies in your application. They allow you to easily install, update, and remove dependencies as needed.
- Manually update dependencies: Update dependencies manually by downloading the updated versions of the dependencies and installing them in your application. This can be a more time-consuming option, but it may be necessary if you are using a custom or outdated dependency manager.
Note – Keep your dependencies up to date on an ongoing basis to ensure that your application is always using the latest versions.
- Update your build process
Here are some ways to update your build process.
- Use Angular CLI: With Angular CLI you can help you set up and manage the build process for an Angular application. It provides a set of commands that you can use to create a new Angular application, generate code, and perform other tasks.
- Configure build tasks manually: You can also configure build tasks manually by setting up your own build script or by using a build tool like Grunt or Gulp. This can be a more time-consuming option, but it may be necessary if you have custom build requirements or if you are using a build tool that is not supported by Angular CLI.
- Consider using a modern JavaScript framework
A modern JavaScript framework is a front-end web development framework that is designed to be fast, efficient, and easy to use. Some popular modern JavaScript frameworks include React, Vue.js, and Svelte.
Converting an AngularJS application to Angular involves several steps and considerations. Hire Angular developers to implement the necessary changes to upgrade the application.
Angular developers will use tools like ngUpgrade and the Angular Upgrade Guide. They write and test code to ensure the upgraded application is stable and reliable.
By following the above-mentioned steps and working with experienced Angular developers, you can effectively upgrade your AngularJS application to Angular. If you need step-by-step guidance on how to do such a migration check out this tutorial on AngularJS upgrade.
