Today, developers that know Angular have no issue finding a job. The average payment per hour they get is $59.22. So we could name Angular.js the best JS framework of 2021 if we didn’t promise you not to pick the winners here.
With that being said, Angular 9 is expected to arrive by the end of 2019. The new version is said to have improved the size of the bundle, which was a common issue with the previous versions that affected download time.
- Vast ecosystem
- All tools are available
- The code generation is high-quality
- Offers an elegant programming style
- Requires much effort to learn
- Still undergoes many changes
Where Angular is useful:
- Single-page applications
- Mobile apps
- Web apps
- Chrome extensions
- Large enterprise applications
- Company dashboards
Here is another top JS framework by a tech giant. Facebook released React six years ago, and the latest version is just a couple of months old. It is very similar to Angular, however lately, it surpasses the Google framework by almost all factors. It is more flexible, requires fewer resources, and updates don’t make it too unstable. You can combine React with other libraries, if necessary.
Find out why we consider React JS faster than Angular.
Of course, it became so widely-used partly because Airbnb and Twitter have it in their cores. But it would help if you remembered that Facebook manages the functionality and stability of these services. So why would this corporation use the framework someone else released.
- It is very flexible
- Creates files of small sizes
- Updates don’t impact stability much
- In most cases, devs need to know additional tools for the full coding
- The difficulty of the learning curve depends on the dev’s experience, knowledge, and background solutions
- The documentation is not optimized
Where React is useful:
- Single-page applications
- Handling the view layer of an app
- Creation of reusable UI components
- Large web applications
This framework saw the dev industry back in 2014, but for some reason, it gained popularity just now. Probably it wasn’t that famous before because of its Chinese origin. In China, many developers use it, and western devs have only begun mastering this technology.
It is effortless and creates files of small sizes. Its architecture is easy to apply, and the step-by-step implementation makes the dev process even more effortless. And the best thing is that you can mix a Vue-based app with another solution to create new products. Also, it offers implemented virtual DOM.
Vue takes pretty much the best of JS frameworks and mixes it in a single technology. But while it is way more flexible than others, it can be a drawback, too. Not every developer can feel comfortable when there is no structure or limits whatsoever. We’ve also compared Vue with other JS frameworks recently.
The average pay Vue developers can get $58.97 per hour. It is a bit lower than what React devs get, but still quite good. And the demand for Vue specialists grows in the western world.
- Small and quick ecosystem
- The structure of code is simple
- Easy to integrate with other apps
- Very flexible
- Might be too flexible for some devs
- Most of the guides are in Chinese
- The English-speaking community is small so far
- The set of tools is limited
Where Vue is useful:
- Building UI
- Single-page apps
- Improving existing apps (performance, UI, etc.)
- Complex apps
While this framework remains rather minimal, it offers all the required tools devs need to create web and mobile apps. And when it comes specifically to Node-based web apps, Express.js guarantees rapid development. Moreover, using it, devs can set up middlewares to respond to HTTP requests and render HTML pages dynamically.
Express.js developers make just as much as other specialists – on the average $58.97 per hour. So it is quite a useful framework to learn today. And Express professionals will not lack work in the nearest future as the demand for their skills is high.
- Full control over external behavior and data access levels
- Fast and easy development
- No need to switch between languages to develop apps and configure servers
- Effortless to integrate other solutions
- Easy learning curve
- You need to understand the middleware plug-ins
- Sometimes the template code makes the process more complex
Where Express.js is useful:
- For the off-frame development
- Web apps, REST API
- Dynamic rendering of HTML pages
This is one of the oldest frameworks that will remain popular in 2021 because many devs are still used to it. Ember is excellent for developing complex apps partly because it is strictly organized. It’s easy to go the wrong way working on an extensive application – too many variables and code can create quite a mess. But Ember will prevent this from happening.
This framework allows working with large ecosystems and changes parts of it without harming the rest of the data. Ember is exceptionally stable and boots rapidly. But it is not that flexible. And it is not very easy to master. However, the big community is helpful.
Even though Ember is quite old, the demand for developers who know this framework is rather high. And the interest for it is not going away any time soon. On average, a developer who can work with Ember will get $58.97 per hour.
- High scalability
- Very productive
- Supports URL-oriented development
- The community is huge
- The documentation is structured and clear
- Not flexible
- Renders slowly
- Not suitable for small apps
- Issues with the testing process
Where Ember.js is useful:
- Large web-based apps
- Complex ecosystems
- Client-side apps
This client-side framework is tiny and rapid. It offers routing and XHR utilities out of the box and is excellent for developing SPAs. Also, it doesn’t depend on other libraries. Mithril has tons of documentation that is hand-crafted and filled with valuable examples of code. It doesn’t lock devs within strict patterns. Instead, it offers idiomatic pattern devs can follow, and tools that can aid them if needed.
The demand for Mithril devs seems to grow as 2021 comes closer. So even though it might not be as popular as other frameworks on this list, we expect it to be widely used in the next year.
- Small size
- Easy to learn
- Much documentation
- Very flexible
- Offers an intelligent auto-redrawing system
- Small only when zipped, doesn’t look so appealing when parsed and evaluated
- Not too popular so that teams might be suspicious towards it
Where Mithril is useful:
- Single Page Apps
- Complex user interfaces
- Streaming services
- Pretty much any web-based app
Therefore, developers can spend less time and effort creating an app. While, for instance, React needs you to write code for the app and for the framework itself, Svelte gives you freedom. Using this technology, you write code only for an app. Therefore, the code is shorter, and the file size is smaller.
This unique approach gives this framework all chances to become one of the most used technologies in 2021. Experts recommend devs to begin studying Svelte so that in the next year, they become pioneers in this technology.
- No need to write code for a framework
- Allows creating independent apps
- Small size file
- A completely new approach to the development
- Short learning curve
- The community is very scarce so far
- The set of features is limited
Where Svelte is useful:
- Writing framework-independent apps
- Creating basically any web app
Aurelia is great for many reasons. It reflects the latest trends in software development with its modular system and a selective approach. At the same time, one can learn it relatively quickly while its support for various ECMAScript editions allows for a greater area of application.
All in all, it has a reputation as an extremely useful and convenient top JS framework.
- Low learning curve
- Very versatile
- Small community
Where Aurelia is useful:
- Projects that require maximum flexibility
Backbone.js is another great library that allows a large degree of flexibility that makes it a perfect solution for structured code. It serves mainly as a supplying element for JS-heavy applications. One can use Backbone to integrate your custom events and collections to your existing application via a REST interface.
It’s currently hosted on GitHub, available for use over a standard MIT license. At the moment of writing, it has 27.6 stars and 5.6 forks from the GitHub community.
When it comes in compressed for production, it has a size of only 7.6 KB.
- Big community
- Very versatile
- No built-in support for data binding
Where Backbone is useful:
- Large-scale JS projects
Last but not least, our list is continued with another famous Node.js framework, often labeled as “full-stack”. Using Meteor is a great way to accelerate your web, iOS or Android development process.
Meteor, due to its nature, is reactive because of the way it refreshes data in a browser. To do so, it copies a sample of the database (naturally, MongoDB) and stores it locally in a browser. That means that all changes get automatically updated in an app – Meteor can do so without sending data back to the server.
- It’s a full stack framework
- Very easy-to-use
- Speeds up the development process
- Documentation could have been better
- Not as flexible as some other Node.js frameworks
Where Meteor is useful:
- Small, reactive applications
The bottom line
It is impossible to single out a particular framework or library. Each of them has its advantages and pitfalls. But we can predict which tools will be accessible in 2021 based on trends, and this list showcases the candidates we think will be widely-used.
Of course, picking a framework or a library for a specific project is not easy. You need to understand the needs and capabilities of a particular technology. Then you can be sure your instruments will lead you to a great application.
Sure, you need quite a lot of experience and expertise in the app development to choose the correct solution for your project. That’s why we’re always ready to offer our help. We have worked and are continually working on different apps with various purposes and requirements. That’s why here at Jelvix, we can quickly determine which framework will be the best fit for a project. So don’t hesitate to contact us. We’re always glad to come to the rescue.
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