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Renderizando Componentes React no Servidor
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Bruno Genaro
July 01, 2017
Technology
1
220
Renderizando Componentes React no Servidor
Talk presented at FrontInSampa 2017 (07/01/2017) in Sao Paulo (Brazil)
Bruno Genaro
July 01, 2017
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Transcript
RENDERIZANDO COMPONENTES REACT NO SERVIDOR BRUNO GENARO @BFGENARO
WHO IS THIS GUY? BRUNO GENARO FRONT-END ENGINEER
SAN FRANCISCO'S OFFICE
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PIRACICABA/SP
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WHAT IS THIS TALK ABOUT? JAVASCRIPT NODEJS UNIVERSAL VS ISOMORPHIC
JAVASCRIPT REACTJS WHY? HOW? WHEN? WHERE?
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1995
1995 Brendan eich • hired by netscape • creator of
javascript • javascript was written in 10 days!!!
2009 ryan dahl • creator of nodejs • Google’s V8
JavaScript runtime • javascript on the server
2011 Jordan Walke • creator of reactjs • one-way data
flow • virtual dom • JSX
2011 still… Charlie Robbins • Isomorphic Javascript • JAVASCRIPT on
the Client and the server
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2014 michael jackson • universal Javascript • JAVASCRIPT on the
Client and the server
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LET THE FIGHT BEGIN THEY ARE THE SAME THING
THERE ARE ONLY TWO HARD THINGS IN COMPUTER SCIENCE: CACHE
INVALIDATION AND NAMING THINGS. - PHIL KARLTON
let’s go back in time! being a JavaScript developer wasn’t
a thing to be proud of
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“real coding" was done in the backend
and now… even on the server (and client at the
same time)
OK, LET’S TALK ABOUT REACT
UNIVERSAL REACT REACT CODE THAT RUNS ON CLIENT SIDE (BROWSER)
AND SERVER SIDE
what does that mean? - On first page load, SERVER
returns pre- rendered HTML STRING - Client-side JS app bootstraps on top of server-rendered HTML - From that point on, it's a client-side JS app
why? - usually jAVascript frameworks render on dom load (which
can be really slow) - bad for user experience - SEO BENEfits
EVERY TIME YOU RELEASE A CLIENT-SIDE ONLY WEBSITE TO THE
INTERNET SOMEONE WRITES A FRUSTRATED BLOG POST
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how? ABILITY TO RENDER A REACT COMPONENT TO A STRING
react component
returns this string
WAIT! WE CAN RUN JAVASCRIPT ALSO ON THE SERVER SIDE,
RIGHT?
THAT’S RIGHT! SO… SO WE CAN RENDER REACT COMPONENTS ON
THE SERVER!
where?
then…
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when? ELIMINATE THE FOUC (flash of unstyled content) Better overall
user experience
when? SHARED CODE Easier code maintenance
when? PROGRESSIVE ENHANCEMENt
when? Improve search engine optimization
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final thoughts •UNIVERSAL apps do NOT replace the server •instead
it Is a way to PRE-initialize the client •after the page loads, it becomes a client-side JS app
QUICK RECAP • On first page load, SERVER returns pre-rendered
HTML STRING • From that point on, it's a client-side JS app • ELIMINATE "FOUC" GIVING A BETTER USER EXPERIENCE • EASIER CODE MAINTENANCE • PROGRESSIVE ENHANCEMENt • IMPROVE SEARCH ENGINE OPTIMIZATION
what next?
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orlandoJS
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REACT WEBPACK UNIVERSAL REACT REDUX REACT INTL
THANK YOU! @BFGENARO