What are the advantages and disadvantages of react

The advantages are: 1. Creating dynamic web applications becomes easier; 2. Reusable components; 3. Performance enhancement; 4. Good compatibility; 5. SEO friendly, etc. The disadvantages are: React targets UI components and is not a complete framework. Basically, ReactRouter and Flux need to be added to write large applications.

The operating environment of this tutorial: Windows7 system, react17.0.1 version, Dell G3 computer.

React is a set of JavaScript web libraries built by Facebook and mainly used to build high-performance and responsive user interfaces. React solves a common problem faced by other JavaScript frameworks, which is the processing of large data sets. Being able to use a virtual DOM and use the patch installation mechanism to re-render only the dirty parts of the DOM when changes occur, React is able to achieve much faster performance than other frameworks.

Advantages of React

1. Creating dynamic web applications becomes easier

Creating a dynamic web application that exclusively uses HTML strings is tricky as it requires complex coding, but React JS solves this problem and makes it easier. It requires less coding and provides more functionality. It utilizes JSX (JavaScript Extensions), a special syntax that allows HTML quotes and HTML markup syntax to render specific child components. It also supports building machine-readable code.

2. Reusable components

ReactJS web application consists of multiple components, each component has its own logic and controls. These components are responsible for outputting a small piece of reusable HTML code that can be reused wherever needed. Reusable code helps make applications easier to develop and maintain. These components can be nested with other components, allowing complex applications to be built from simple building blocks. ReactJS uses a virtual DOM-based mechanism to populate data in the HTML DOM. Virtual DOM works quickly because it only changes individual DOM elements instead of reloading the complete DOM every time.

3. Performance enhancement

ReactJS improves performance through virtual DOM. DOM is a cross-platform and programming API that handles HTML, XML or XHTML. Most developers face this issue when updating the DOM, which slows down the performance of the application. ReactJS solves this problem by introducing virtual DOM. The React virtual DOM exists entirely in memory and is a representation of the web browser's DOM. Therefore, when writing React components, we do not write directly to the DOM. Instead, we write virtual components that convert react into DOM, resulting in smoother and faster performance.

4. Good compatibility

For example, use RequireJS for loading and packaging, while Browserify and Webpack are suitable for building large applications. They make those difficult tasks less daunting.

5. Known for being SEO-friendly

The traditional JavaScript framework has a problem when dealing with SEO. Search engines often have trouble reading JavaScript-heavy applications. Many web developers often complain about this problem. ReactJS solves this problem and helps developers navigate easily on various search engines. This is because the response .js application can run on the server and the virtual DOM will be rendered as a regular web page and returned to the browser.

6. Isomorphic, pure javascript

Because the search engine crawler program relies on the server response rather than the execution of JavaScript, pre-rendering your application has Helps with search engine optimization.

7. Scope of test code

ReactJS applications are very easy to test. It provides a scope within which developers can test and debug their code with the help of local tools.

Disadvantages of React:

Not suitable for making a complete framework alone

React is The target is UI components, which can usually be used in combination with other frameworks. Currently, it is not suitable to build a complete framework alone. Even if React is combined with Flux, it cannot be called a complete framework. For example, do you want to use Promise-based AJAX? Sorry, no, I can find a ready-made library myself. And there are far fewer third-party components than Angular. React itself is just a V, so if you want a complete framework for a large project, you may need to introduce Flux and route related things. Angular provides much more in this regard than React.

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