It is good for beginners to know that it is not any sort of framework, instead, it is a library simply rendering the views of the web developer.
Operative Components are Useful
Earlier React components were defined in 2 ways:
“React . Create Class()
The User Interfaces created today by web developers mostly contain functions instead of methods in a class. Using functions breaks up the entire construction and makes it easy for developers to extract a component on its own and also it takes lesser time to understand. React is being updated and in future it will make functional components more efficient than the class-based components.
However, functional components have a few disadvantages too. Few consider them to be the strength of the components. Assigning ‘ref’ is not a good way to write classes even though it could be easier to identify and communicate. This directs the component to a way which is far away from React.
Does the Component Size Matter?
Every efficient developer knows that using really small modules or classes are best options because they are easy to comprehend, test and of course maintain. React is also not an exception. Finding out which size is most beneficial is a difficult task and the understanding only comes with age. Of course the size might differ depending on personal preference of the web developer, but usually smaller components function in a better way.
Stateless Components Simplify Matters
Assigning state to components make it difficult to test them. Testing the behavior of components allows developers to come up with different combinations of state and props and also find out which are the ones to be tested and how to test. Stating components are also difficult to keep track of. On the other hand, state makes it very easy to infuse business logic in component. Here it becomes easy to incorporate calculations into the component. However, adding state makes testing difficult. It also makes information sharing more complicated.
PropTypes provide an effortless way to add better safety to React components. During web development if wrong or no prop is added, React will log an error which developers come to know of. There are quite a few advantages to this. Bugs can be easily fixed using PropTypes and also developers will not have to check for ‘null’ and ‘undefined’ often. It also saves time on the part of the reader who does not need to find the props.
Shallow Rendering is the Go-To Method
Shallow Rendering is the go-to method for web developers now. It is nice, though not proven and yet. It facilitates rendering of single component entirely without having to do any in-depth search on subsequent components. This allows time while testing a single component. Developers write various tests, but the following 3 are the commonest. They are:
Render Logic- Display of a single component
Prop Transformations- Multiple components can exist
User Interaction- Interactive aspect of components
Integration Testing-Testing whether the components
Redux.js used the framework for Flux to build user interface. Flux is essentially a pattern or style and architecture for designing web applications. Flux also uses React for rendering. Redux functions in ways where the components are ascribed callback functions as props which are termed as UI events. The callback formulates dispatch action based on the event while the reducers process the actions keeping a tab of the new state. The new state of the entire application enters a single store and the components receive the new state as props and transform themselves. Redux performs this complex operation in a simple manner with a small API. Redux can also be complemented by other libraries like Redux-thunk, Immutable.js and Reselect.
The use of React and Redux does not end here. The dev tools for both these are extremely well laid out. The dev tools for React test the rendered tree of React elements. This is an unbelievable element which makes browser viewing awesome. The Redux dev tool are equally impressive which enables developers to check at every stage of development. These tools can be added either as browser extension or as dev dependency.
Babel, Webpack, NPM, JSX and ES6
JSX is the only component here which is specific to React. The only problem with this is that a tiny amount of build-time complexity is added that can be solved effortlessly through Babel. ES6 also comes with great features like arrow functions, constants, spread and rest operators, array and object destructuring and so on. NPM helps in package management while Webpack bundles codes.
React.js is powerful and these guidelines will definitely help you in avoiding some grave mistakes regarding its usage. Web developers have found their strong foothold in this world of development, finally.