The language is declarative. You can describe the elements using a tremor like a syntax react some people also view react as V in MVC. MVC stands for Model View Controller and V represents View inside MVC.
If you do not know MVC pattern don’t worry there is not a prerequisite to know about MVC. It’s exclusively used to describe a visual appearance of user interface elements and dynamic interaction with the user and reactjs development companies doing it really really well.
Why react js is reusable?
React is modular in nature you can create components in react and you can nest components within each other. You can nest one component with another component. You could also reuse the same component in several views.
That’s why react is very reusable and you can reuse the component that you have created again and again. So just to give you an example, what you see on the screen is basically a friend list. This friend list consists of many different components.
So these are different components: it consists of a friend list and the friend list item. Basically, the friend list is a collection of Friend list items. Each friend list item consists of a picture of a friend then the name of the friend, the number of friends he has, and also a verification button whether they are still friends with this person or not.
Inside the friend list item, there is another element called friend list info which consists of just friend name and the number of elements and the number of friends. Friend list item again consists of another react element which is called friend info.
Friend info consists of the name of the friend and the number of friends it has. In addition to the friend info, the friend list item also consists of the picture of a friend and also a boolean flag which indicates whether he is friends with me or not.
A very complex view can be easily refactored into the individual react components.
So this is a visual appearance of a react view. And the way you describe that in a web page is a similar XML like syntax you basically describe a Friend list item and inside when this you basically have a friend list at the top inside Send as you have a collection of this friend list item and you have their attributes like picture URL.
Our friend info could be reused on several other screens in case you are wondering why to use react at all you have come to the right place. You might be wondering, I am already using HTML to create the web pages, I have been using frameworks like angular or ember or knockout in addition to my HTML to create the dynamic HTML elements.
Who is a full stack developer?
Full-stack developer basically is the developer who’s capable of developing client-side applications as well as the service and application and also mobile application.
Netflix, Yahoo, Instagram & New York Times, Khan Academy using React
Facebook internally is using it for this chat application in addition to Facebook a lot of other big companies like Netflix, Yahoo, Instagram & New York Times, Khan Academy, and also Airbnb uses react in all of their applications.
That is the testimonial to the popularity of the react app reacts framework and that’s why it’s becoming more and more popular.
GraphQL and GraphQL in Relay – Facebook’s other libraries
In addition to react there are two other libraries available from Facebook, GraphQL and “GraphQL in Relay” is very useful for writing queries that you can use to fetch the data from the server in a declarative way. The relay is basically a glue that blurs between the query and the server so using the react graph QL and relays you can really build very powerful web applications that are highly performant at highly scalable.
Having said that to use react you don’t need to know graph QL and you can use react without graph QL and others will be publishing new courses on graph QL and relay in your future and then it will send an announcement and then you can take those courses as well.
Embarq Ryan Florence from Facebook as demonstrated in react.js conference, in 2015
There are three different key screens one on the left is a demo built using ember, the one in the middle with the demo built using angular, and the one on the right is the demo built using react. So as you can see the performance and the memory footprint of amber on the left keep on climbing, so there is a memory leakage in the member and also the memory of angular is comparable to the memory footprint of react.
Now, as you can see the performance wise the react application is responding a lot faster as compared to angular and imbel. Also, the responsiveness of the app that is when a mouse hovers over a particular link the react responds to a very better way instantaneously as compared to ember and angular so this demonstrates basically the performance of the react app is great way better as compared to ember and angular.