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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