Reducing Coupling FactorĬoupling states the degree of dependency between different entities thereby helping us get a clear understanding of how clean any code is. There is no requirement to continuously check or log the state of the component in order to understand what is happening. Debugging is a piece of cakeįunctional components make use of props which result in only one output makes debugging easy for programmers. All these points drastically optimize the performance giving us better and faster results. Additionally, functional components require fewer lines of code and faster bundles. Yields better performanceĪs there are no states or lifecycle methods in functional component, the overload created by lifecycle events are eliminated hence this avoids unnecessary memory allocation and checks. This makes testing of functional components very easy and you will not need to rely on any state manipulation or external testing libraries. Furthermore, for every input in functional components, there is only one output. It is easy to test components that do not have any side effects or hidden states. This helps the reader understand where things go and come from. Additionally, the use of prop helps to understand what is getting used in the functional component. More time is utilized in reading than in writing the code hence programmers should ensure the code is easy to read so that other people can also make their contribution effectively.įunctional components can not have hidden inputs nor modify a hidden state. The biggest advantage of the functional component is that they have your code easily and also make your program easy to read and understand for others. You must be wondering how the lack of state and lifecycle methods can be advantageous? Well, here are some of the key reasons why you should be using functional components over classes in React.js: 1. Why should you use React.js functional components? This is the reason why they are also known as stateless components. Functional components do not have state and lifecycle methods like class components.
On the other hand, class components have to use the render method. A functional component has only one constraint that has to take props as an argument and it should return a valid JSX. Class components involve the use of ES6 classes, while functional components make use of functions. In React.js there are two main types of components used by programmers, class components and functional components. When to avoid the use of React.js functional components?.Why should you use React.js functional components?.What are React.js functional components?.