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Physics

Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging...

Category : 11-12

Time Required : 30min

Chemistry

Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy of the...

Category : 11-12

Time Required : 30min

Mathematics

Mathematics, the science of structure, order, and relation that has evolved from elemental practices of counting, measuring, and describing the shapes of objects...

Category : 11-12

Time Required : 30min

Biology

Biology, study of living things and their vital processes. The field deals with all the physicochemical aspects of life. The modern tendency toward cross-disciplinary sd...

Category : 11-12

Time Required : 30min

English

English originated in England and is the dominant language of the United States, the United Kingdom, Canada, Australia, Ireland, New Zealand, and various island nations...

Category : 11-12

Time Required : 30min

Programming Language

A programming language is any set of rules that converts strings, or graphical program elements in the case of visual programming languages,to various kinds of...

Category : 11-12

Time Required : 30min

History

History is the study of the past. This study would also include learning about humanities and social sciences. Past historical events, practices, cultures, languages, art and...

Category : 11-12

Time Required : 30min

Economics

Economics is a social science that focuses on the production, distribution, and consumption of goods and services, and analyzes the choices that individuals, businesses...

Category : 11-12

Time Required : 30min

Sports

Sport is commonly defined as an athletic activity that involves a degree of competition, such as netball or basketball.Many people play sports with their friends.Sports...

Category : 11-12

Time Required : 30min

Frequently Ask Questions :

While building client-side apps, a team of Facebook developers realized that the DOM is slow (The Document Object Model (DOM) is an application programming interface (API) for HTML and XML documents. It defines the logical structure of documents and the way a document is accessed and manipulated.). So, to make it faster, React implements a virtual DOM that is basically a DOM tree representation in JavaScript. So when it needs to read or write to the DOM, it will use the virtual representation of it. Then the virtual DOM will try to find the most efficient way to update the browser's DOM. Unlike browser DOM elements, React elements are plain objects and are cheap to create. React DOM takes care of updating the DOM to match the React elements. The reason for this is that JavaScript is very fast and it's worth keeping a DOM tree in it to speed up its manipulation. Although React was conceived to be used in the browser, because of its design it can also be used in the server with Node.js.

For props the Data is passed from one component to another . On the otherhand,in state the Data is passed within the component only.
props is is Immutable (cannot be modified). On the otherhand, state is Mutable ( can be modified).
Props are read-only. On the otherhand, State is both read and write.

It can be use at -
1.Reading from local storage
2.Registering and deregistering event listeners
Zahid Hossen

Sidney,Australia

75kg

Weight

6.5

Height

25yrs

Age

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