You can be sure that such tools as React and Angular will not lose their popularity in the near future, as they get significant support from Facebook and Google. Other frameworks sometimes are very underrated; however, some of them may become the best solutions for modern application development.
React itself also tried to popularize its concepts to define the unique way to frontend web development. If you want to work with the framework, you need to master a component-based architecture, JSX, and unidirectional data flow (that is implemented by Flux). You will need to be aware of numerous additional tools to get real flexibility in front-end development to utilize React.
The applications based on React are divided into multiple components, where every single component file contains HTML markup and business logic. React also represents special objects – state and props, which help you to pass data from a component to the layout or from a parent component to a child component.
React became the initiator for developing multiple additional tools to reach high flexibility (you may choose MobX, Fluxy, Fluxible, Redux or RefluxJS instead of Flux). The same goes for HTTP libraries — you can apply jQuery AJAX, fetch API, Superagent, and Axios.
It’s expected that Angular2 will get more support from Google in the future. If you do not want to permanently choose among additional libraries (as with React), then Angular is what you really need.
When you create an Angular-based app, you break it up into numerous components with nested or child components. Every single component is broken into three files. One is for noting the business logic of a component, the other two are for the layout and styles related to this component. You will also have to get used to services, the dependency injection framework, and directives (special HTML attributes). By the way, React does not have dependency injection.
Vue has no extremely fundamental differences from other frameworks. You may definitely choose Vue as this JS framework is less complicated than React and Angular 2.
The concept of Vue has been taken from Angular and React. For many professionals, it looks even better than its predecessors. However, from the other point of view — having a solid framework, such as Angular, or powerful libraries that React proposes may outweigh simplicity when developing apps.
Vue was developed in 2016. The dual integration mode of this framework is one of the most interesting features for creating high-end SPAs.
This JS framework is considered a direct Angular competitor. It may even be interpreted as the equivalent of Ruby on Rails for the browser. Perhaps, Ember is really underrated. In fact, it looks like the best choice in case you need a modern framework to develop complex client-side applications.
Ember.js was introduced to the software market in 2015. Its application area is really wide. The framework supports two-way data binding and establishes a reliable platform for handling complicated UI. Among the popular examples of companies that use Ember, you may find Netflix, LinkedIn, or Nordstrom.
Backbone has existed for a long time, but it is still widely popular in legacy apps and in new projects that need a less prescriptive framework or library. The framework is rather easy to implement; however, to use it properly, you will need to apply some additional tools, such as Marionette, Chaplin or Thorax, Handlebars or Mustache, etc.
Backbone proposes a minimalistic approach to application structure. It is lightweight and provides the base opportunities of a framework, letting developers create what they need.
The framework forces no templating engine; it leaves that up to the individual developer. The only strong dependency related to this JS framework is the Underscore library, which provides many assisting functions for handy cross-browser work with JS.
Backbone strives to decrease complexity to avoid performance issues (unlike many other JS frameworks).
Meteor or Meteor.js serves its name because it covers a significant portion of software development. While applying this framework, be ready to deal with back-end development, business logic, management of the database, and rendering of the front-end.
This open-source JS library developed by Google and can create the website elements without going into a complex level. The framework supports one-way/two-way data binding that creates a more extensive application area.
To sum it up, let’s highlight once again, why we use React, Angular, Vue, Ember, and Backbone JS frameworks.
Besides, powerful JS frameworks should have their ecosystems. They aim at solving different problems of client-side development such as managing app state, routing, communicating with the backend, etc.