WEB DEVELOPMENT USING REACT JS

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This document provides an introduction and overview of Reactjs including: 1. Reactjs core concepts including components, virtual DOM, and JSX 2. React components are self-contained reusable blocks and many companies have open sourced React component libraries 3. The React lifecycle methods for components including initialization, update, and destruction

Technology

Most read

Plan
What is Reactjs?
ReactJs core concepts
Let's Code
Application Benefits
Front And Back End
Programming Testing
Database
Question Session

HELLO !!!
I'mMuthukumaranSingaravelu
WHOAMI?
Programming Lover
Someone try to learn new thing everyday

I'm Web Developer
I want to create
web page :)

Short Summary
A Facebook & Instagram Collaboration
Initial release from 2013

Separation of concerns:
app/html/button.html
app/css/button.css
app/js/directives/button.js
Core Problem !!!!

SEO Friendly
Coding is Simpler because of JSX
Big minds are backing ReactJs

JSX COMPONENTS
UNIDIRECTIONAL
DATA FLOW
VIRTUAL
DOM

React Components
Self-contained reusable building blocks
of web application

React Components
Printerest open sourced its full React component
UI Library
reusable

React Components
Office UI Fabric
reusable
Fabric React is a collection of robust React-based
components designed to make it simple for you to create
consistent web experiences using the Office Design
Language

INITIALIZATION UPDATE DESTRUCTION
getInitialState()
getDefaultProps()
componentWillMount()
render()
componentDidMount()
componentWillReceiveProps()
shouldComponentUpdate()
componentWillUpdate()
render()
componentDidUpdate()
componentWillUnmount()

React Virtual DOM?
Keep track of state in DOM is hard!
It'll be so easier to render

React
Re-render everything for
every update

Use different algorithm with the browser DOM tree to
identify the changes
Instead of creating new object, Reactjs just identify
what change is took place and once identify update
that state

Build new virtual DOM subtree
Diff. with the old one
Compute the minimul set of DOM mutuation
Batch execute all update

React JSX
React components are written in JSX
A JavaScript extension syntax allowing easy quoting
of HTML and using HTML tag syntax to render
components

React core concepts
:: state & props !!!

React JS is a JavaScript library for building user interfaces. It uses virtual DOM and one-way data binding to render components efficiently. Everything in React is a component - they accept custom inputs called props and control the output display through rendering. Components can manage private state and update due to props or state changes. The lifecycle of a React component involves initialization, updating due to state/prop changes, and unmounting from the DOM. React promotes unidirectional data flow and single source of truth to make views more predictable and easier to debug.

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Introduction to React JS for beginners Varun Raj

- React is a JavaScript library for building user interfaces that uses a virtual DOM for faster re-rendering on state changes. - Everything in React is a component that can have states, props, and lifecycle methods like render(). Components return JSX elements. - Props are used for passing data to components in a unidirectional flow, while states allow components to re-render on changes. - The render() method returns the view, accessing props and state values. Forms and events also follow React conventions.

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React is a JavaScript library for building user interfaces. It was created by Facebook and is best for building dynamic websites like chat applications. React uses a virtual DOM for efficiently updating the view after data changes. Components are the building blocks of React and can contain state and props. The document provides an example of a simple component class and demonstrates how to add state and props. It also includes links to example code and MicroPyramid's social media profiles.

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WEB DEVELOPMENT USING REACT JS

2. Plan What is Reactjs? ReactJs core concepts Let's Code Application Benefits Front And Back End Programming Testing Database Question Session

3. HELLO !!! I'mMuthukumaranSingaravelu WHOAMI? Programming Lover Someone try to learn new thing everyday

4. I'm Web Developer I want to create web page :)

5. How is that possible?

6. FaceBook created Reactjs

7. What is Reactjs?

8. Short Summary A Facebook & Instagram Collaboration Initial release from 2013

9. A Library for creating User Interfaces

10. React is not a Framework

11. Who are using Reactjs?

13. Why Reactjs?

14. Separation of concerns: app/html/button.html app/css/button.css app/js/directives/button.js Core Problem !!!!

15. SEO Friendly Coding is Simpler because of JSX Big minds are backing ReactJs

16. Virtual DOM Unidirectional Data Flow

17. Reactjs Core concepts

18. JSX COMPONENTS UNIDIRECTIONAL DATA FLOW VIRTUAL DOM

19. Reactjs core concepts :: Component

20. React Components Self-contained reusable building blocks of web application

21. React Components Printerest open sourced its full React component UI Library reusable

22. React Components Office UI Fabric reusable Fabric React is a collection of robust React-based components designed to make it simple for you to create consistent web experiences using the Office Design Language

23. Who uses UI Fabric?

24. React Components Lifecycle !

25. INITIALIZATION UPDATE DESTRUCTION getInitialState() getDefaultProps() componentWillMount() render() componentDidMount() componentWillReceiveProps() shouldComponentUpdate() componentWillUpdate() render() componentDidUpdate() componentWillUnmount()

26. React is about components...

27. How does component look like?

28. React core concepts :: Virtual DOM

29. React Virtual DOM? Keep track of state in DOM is hard! It'll be so easier to render

30. React Re-render everything for every update

31. Seems expensive?

32. Use different algorithm with the browser DOM tree to identify the changes Instead of creating new object, Reactjs just identify what change is took place and once identify update that state

33. React Virtual DOM Re-rendering process?

34. Build new virtual DOM subtree Diff. with the old one Compute the minimul set of DOM mutuation Batch execute all update

35. React core concepts :: JSX

36. React JSX React components are written in JSX A JavaScript extension syntax allowing easy quoting of HTML and using HTML tag syntax to render components

37. React core concepts :: state & props !!!

38. Props Parent Component Component state

39. Let's start coding...

WEB DEVELOPMENT USING REACT JS

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