Introduction to React
Features of React
Given below are some essential and most demanding features:
2. Virtual Document Object Model
React make an in-memory data structure cache, then it computes the difference between the previous DOM and the new one and then updates the changes or mutations performed. Thus, it updates only the changes, not the whole application. This helps to increase speed and performance and reduces memory wastage.
React views are used as the state’s functions where the state determines the behavior of the component. Therefore we can make changes to the state and then pass it to a view the ReactJS and then determine the output and the actions, functions, and events. This makes testing and debugging easy.
5. One Way Data Binding
It allows one-way flow of data, i.e. one-way data binding. Due to this feature, there is better control over the application. It makes the application’s state to be contained in specific stores, and therefore all other components remain loosely coupled. This enhances the flexibility and efficiency of the application.
7. Learning Curve
In comparison to other frameworks, the learning curve of React is low. Beginners having basic programming language can also learn to React easily.
How does it Work?
- It operates on Virtual DOM. It does not manipulate the document on the browser after the changes are made; it makes changes on the virtual DOM. When the virtual DOM is completely updated, then it updates the browser’s DOM in the most efficient way possible.
- The virtual DOM of React resides entirely in memory. It represents the web browser’s DOM, so when a React component is written, a virtual component that is cheap to create is made, which is turned into DOM by React. It was made to be used in the browser, but with Node.js, it can be used with the server also.
How do we Use it?
Using React is simple as including a JS file in HTML.
Let us see the usage of React by a simple example.
<meta charset = “utf-8”>
<title> First React Code</title>
<script src = https://cdnjs.cloudfare.com/ajax/libs/react/15.3.1/react.min.js”> </script>
<script src = https://cdnjs.cloudfare.com/ajax/libs/react/15.3.1/react-dom.min.js”> </script>
<script src = https://unpkg.com/babel-standalone@6/babel.min.js”> </script>
<div id= “application”> </div>
<script type = “text/babel”>
ReactDOM. render(<h2> First Code </h2>, document. querySelector (‘#application’)
It seems a bit difficult, but it is easy to implement and learn.
Who Uses React?
- It is becoming popular in today’s market, and its features are helping big companies in improving their experience and interfaces.
- Internet giants like Facebook, Instagram, Netflix, New York Times, Yahoo Mail, Khan Academy, WhatsApp, Vivaldi Browser, Codecademy, and Dropbox are using React in one or the another way. Sberbank of Russia has also used React o develop their bank’s website.
- Many websites like github.com, reddit.com, outlook.live.com, bitbucket.org, account.godaddy.com, and many more also use React.
Advantages and Disadvantages
Given below are the advantages and disadvantages:
- SEO friendly
- It is easy to create test cases for UI
- React components can be reused easily
- Ensures faster rendering
- Debugging is easy
- Ease of migration
- Enhances productivity
- Writing components is easy
- Stable code
- Has a helpful developer toolset
- It is available for mobile app development
- Easy to learn
- Enhances performance
- The high pace of development
- Poor documentation
- Additional SEO hassle
- View-oriented only
- Large size library
- The learning curve for beginners
- Requires manual processing of data changes
- I need more code in some cases
This has been a guide to What is React? Here we discussed the detailed concept with understanding, advantages, and disadvantages. You can also go through our other suggested articles to learn more –