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Sip of React.JS Prathamesh Sonpatki @_cha1tanya

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Agenda http://bit.ly/sip-of-reactjs

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Open Library Search Project

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React

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Build UI

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V in MVC

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Simple

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Declarative

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if encodingCompleted removeLoader(); updateHeaderText(‘Encoding completed.’) else showLoader();

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if encodingCompleted removeLoader(); updateHeaderText(‘Encoding completed.’) else showLoader(); if encodingCompleted Encoding Completed else
Loading…

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Unconventional ideas

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Hello World

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"The secret to building large apps is never build large apps. Break your applications into small pieces. Then, assemble those testable, bite-sized pieces into your big application" Justin Meyer, author of CanJS

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Components

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Component is fn()

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Reusable

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Composable

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Separation of concerns

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Let’s look closely

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ಠ_ಠ

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JSX

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JSX is like a healthy vegetable that tastes like decadent chocolate cake. You feel guilty, but it’s good. Eric Elliot

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Give it 5 minutes https://signalvnoise.com/posts/3124- give-it-five-minutes

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One book at a time

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No templates

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Any sufficiently complicated templating language contains an ad hoc, informally-specified, bug-ridden, slow implementation of a turing complete programming language. - Jasim A Basheer

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List of books

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React === JavaScript #=> true

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Managing Data

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Data changing over time is root of evil Pete Hunt

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Props

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Immutable

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One way data flow

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Parent to Child

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Child to Parent ????

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propTypes

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State

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State is internal

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getInitialState()

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Responding to state changes

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setState()

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Refresh

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Re-Rendering the component

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Re-Rendering the component tree

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Will it be too slow?

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Virtual DOM

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Diff

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Minimal set of changes

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Batch updates

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Nothing is new!

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Component Lifecycle hooks

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componentWillMount componentDidMount componentWillReceiveProps componentWillUnmount componentDidUnmount

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Some patterns

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Avoid state as much as possible

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props > state

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Dumb components

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Learning Curve

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Just JavaScript

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Just JavaScript & JSX

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Just JavaScript

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Easy to sneak into existing projects

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Let me know your experience!

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Thanks! @_cha1tanya @BigBinary