The ecosystem of the front-end development is continuously changing on everyday basis. New tools are coming up and captured the market as best sellers in the web development field which is ultimately revolutionizing the working environment whereas other old tools are becoming dead.
What is React?
React is one of the most famous front-end JavaScript libraries in the field of web development. It is a component-based, open-source, front-end library which is responsible only for the application’s view layer. In the MVC (Model View Controller) architecture, the view layer is responsible for the look and feel of the apps.
What is React JS?
As per the creator Mr. Jordan Walke of React JS, it is an efficient, flexible and open-source JavaScript library for building fast, simple and scalable frontends of web applications. The latest research by Stack Overflow also revealed that React is one of the most loved web frameworks while Angular ranked 9th on the same list.
Top companies like Apple, Netflix, Paypal are using the React JS today. Not only that, in fact almost over 30 thousand online websites are using ReactJS framework today.
React JS comes up with lots of new concepts which has overcome the drawbacks of previous front-end frameworks. Lots of big companies are using React Js and they are also looking for certified and skilled person. Doing a proper React JS certification course from any well -reputed institution will help the candidate to crack the interview and get a good job in well-known organization.
One of the major components of React Js is the State. It holds the data of a component. The component then returns the data contained within the state to the output.
Key Benefits of ReactJS:
- Flexibility
- Speed
- Usability
- Performance
- Mobile App Development
What is State in ReactJS?
The State of the component can change over the time. The change in the State can only happen as a response to the system-generated events or user action and such changes will determine the behaviour of the component and how it will work.
Some features of React JS State:
- A State can be modified based on changes of network and user action.
- The state object is initialized in the constructor.
- Each time the State Object change, React re-renders the component t the browser.
- setState() is a function which performs a low combine between the previous and new state.
What is setState() Method?
The setState() method adds all of the updates made to the component state in a list and instructs the React to re-render the component and children with the updated state.
This tree will mainly check out how the Search Components UI should change according to the state change by comparing it with the basics of the previous tree. Thus, React is so fast as compared to other front-end development tool.
Now, State Vs. Props:
| State | Props | |
| Mutability | State is able to hold the data and can change over time | Props are immutable and if it sets once, then cannot be able to change. |
| Use Case | State stores the data of the components that have to be rendered to the view | Bur Props are mainly used to pass the data and event handlers to the child components |
| Updates | Event handlers update State. | The parent component set update props for the children components. |
| Component | State can only be used in the class components | Props can be used in case of both functional as well as class components |
How Set State() works?
We are here giving few small steps to show you how setState() works:
- Suppose we have a search component which displays a search term.
- The search term is presently empty.
- Now, the user has submitted a search term
- That term is now captured and stored by the setState() as a value.
From the above discussion, we got a clear vision about the most fundamental concept of React JS and how you can use it practically. But, you may be wondering how to learn the necessary skills to take the most advantages from this rising popularity. We would like to tell you that taking React JS training in Bangalore either online or offline from well-reputed academy will help the candidate to gain knowledge and skill and get better opportunity in different front end development industry.
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