What are the Key Features of ReactJS?
ReactJS code consists of multiple components. Each ReactJS component has its own controls and logic that are specific to the component. Components can be reused or even repurposed in other parts of the code to meet specific requirements and help maintain the order of the code, especially during larger projects that require a lot of scripts.
DOM (document object model) manipulation is essential for modern, interactive web activities. Web apps structure their elements in DOM trees which are organized to help scripts access the various elements of a webpage. Traditional DOM manipulation required entire elements and DOM components to be re-rendered every time a manipulation occurred. A virtual DOM only re-renders the actual components that were manipulated. ReactJS uses a virtual DOM to improve memory and efficiency.
What are the Pros of React?
The pros of ReactJS are:
- It is easy to learn.
- A virtual DOM is used.
- There are reusable components.
- Operates on a one-way data flow.
- SEO friendliness.
Easy to Learn
Additionally, business owners and hiring managers will have an easier time finding web developers with ReactJS experience and knowledge since the tool is open-source and easy-to-learn. The ease of learning React also benefits developers who already have a background in ReactJS too. Since React is an open-source tool, development improvements are being made constantly, so developers need to stay up-to-date on the latest improvements.
The issue with real or traditional DOM constructs is that when they process changes, they rewrite the entire DOM tree. Modern, interactive websites and applications have complex and large DOM trees. Every time inputs or queries are made, a real DOM has to rewrite the entirety of the page, and this can hamper performance and waste memory.
The virtual DOM is much more efficient, performs faster, and ultimately creates a better User Interface. Instead of rewriting the entire DOM tree every time a change is made by a user, a virtual DOM only updates the element being manipulated. For example, let’s say that you have a checklist of ten items. A real DOM will rewrite and re-render all ten list items once one item on the list is checked. A virtual DOM only rewrites the single item that was checked instead of the entire list.
Writing code for large projects is a time-consuming process. Traditionally, developers would not be able to effectively reuse code components because changes to any one component would affect all copies of that component. Imagine being an artist who has to redraw the company logo for every instance the logo is used instead of creating it one time and manipulating it to fit the specifications of your medium.
Programming and web development projects cannot always take advantage of the efficiencies of design reuse. Small changes in one instance of a component can affect the copy of the component elsewhere. ReactJS isolates all components. This means changes or updates to one instance of a component do not affect all other instances of the same component. React allows developers to effectively reuse design components which saves them time and makes their code more accurate.
One-Way Data Flow
ReactJS simplifies this problem by binding all data to downward motion. In this structure, parent data cannot be affected by changes in child elements. This creates a more stable code and gives developers more control over large and complex projects.
What are the Cons of React?
We’ve explored the major pros of using React, from its high-performance capabilities and reusable components to its easy-to-learn syntax and SEO friendliness. However, there are a few cons associated with ReactJS that we would like to touch on briefly as well to give you a complete picture of ReactJS before you begin working with it.
These are the cons of React:
- JSX syntax.
- Fast development pace.
- Somewhat slow documentation.
While the JSX syntax extension makes things easier for some developers, there is another group of developers that find JSX to be a disadvantage of React. Some web developers and designers find the JSX code to be too complex and difficult to grasp.
Many new developers find JSX to be a barrier to mastering ReactJS. While this might be a con to some developers, it is important to note that JSX has its benefits too, and helps protect the code from injections.
The primary complaint about JSX is its difficulty. JSX doesn’t negatively impact the performance or User Interface capabilities of ReactJS. This con is more of a preference than anything else.
ReactJS is constantly evolving and changing. The pace at which React is developed can be seen as an advantage or a disadvantage depending on who you are. The developers who see this explosion of development as an advantage would argue that React is constantly being improved and making their jobs easier. The developers who see the pace of development as a disadvantage would argue that they have to constantly relearn how to work with ReactJS, and it is difficult to keep up with.
The pace of ReactJS’s development is a common disadvantage that is brought up, but it should be noted that in recent years React’s core API has gotten a lot more stable. Most updates today affect the library and new features. Some developers are not happy with the pace of change, nor are they comfortable trying to keep up with new developments. While you may commonly hear that React develops too quickly, it is important to note that new developments improve the framework and help make it perform at a higher level.
This con is tied to the problem people have with the pace of React’s development. As a result of rapid development, educational documentation and resources can be sparse in covering the latest updates and changes.
Since ReactJS is an open-source framework, developers are able to create their own support documents, but since anyone can create these resources, you could come across poor resources that offer little help.
Once again, this disadvantage of React depends on your circumstances and how you view innovation and development. Is React developing so quickly that sometimes proper documentation cannot keep up? Yes. However, I tend to believe that progress is a positive thing, especially when it comes to creating dynamic web and User Interface experiences. You can find user-created support resources for many of the questions or issues you may have while using React.
Can React be Used for Mobile Development?
React Native is one of the most efficient and powerful mobile app development environments. The hybrid apps created using React Native render some parts of the code in the native language of the specific platform. This aspect of React Native creates a more powerful app, a faster app, and ultimately an app with a better User Experience than other hybrid app development frameworks.
ReactJS is a very efficient development framework that can be used to help developers create faster web apps with powerful User Interfaces. There are pros and cons of React, but I think many of the cons associated with ReactJS are due to people not liking rapid changes. There is nothing wrong with constant development. You could make the argument that rapid development is one of the strongest advantages of React. Technology improves at an exponential rate. Newer technology will develop even more rapidly than ReactJS. Development is an exciting step towards the new future of tech.