Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Introduction to React.js
Search
Max Stoiber
December 06, 2016
Technology
1
140
Introduction to React.js
The slides for my introduction to React.js talk!
Max Stoiber
December 06, 2016
Tweet
Share
More Decks by Max Stoiber
See All by Max Stoiber
Testing React Applications
mxstbr
3
270
Styling Intro
mxstbr
3
350
Styling React Applications
mxstbr
2
500
Scaling React.js Applications (short version)
mxstbr
2
360
Scaling React.js Applications
mxstbr
0
380
Offline is the new Black
mxstbr
3
910
Exploring ES6
mxstbr
1
310
Testing React.js Applications
mxstbr
4
480
Other Decks in Technology
See All in Technology
Luupの開発組織におけるインシデントマネジメントの変遷 ver.RoadtoSRENEXT2024
grimoh
1
270
【基調講演】変える、今ここから ― IoTとAIで紡ぐ未来
soracom
PRO
0
320
AI研修【MIXI 24新卒技術研修】
mixi_engineers
PRO
0
130
データ分析基盤を作ってみよう~設計編~
nrinetcom
PRO
1
110
スタートアップにおける組織設計とスクラムの長期戦略 / Scrum Fest Kanazawa 2024
yoshikiiida
13
3.6k
Azure AI ことはじめ
tsubakimoto_s
0
130
What if...? 처음부터 다시 LLM 어플리케이션을 개발한다면
huffon
0
1k
簡単に始めるSnowflakeの機械学習
nayuts
1
190
エンジニア向け会社紹介資料
caddi_eng
14
220k
サーバーレスAPI(API Gateway+Lambda)とNext.jsで 個人ブログを作ろう!
shuntaka
PRO
0
560
累計ダウンロード数1億8000万を超えるアプリケーションプラットフォームのレガシーシステム脱却とモダン化への道
kmitsuhashi
0
120
VPoEの視点から見た、ヘンリーがサーバーサイドKotlinを使う理由 / Why Server-side Kotlin 2024
cho0o0
1
420
Featured
See All Featured
Teambox: Starting and Learning
jrom
130
8.6k
GraphQLの誤解/rethinking-graphql
sonatard
59
9.6k
[RailsConf 2023] Rails as a piece of cake
palkan
35
4.4k
How STYLIGHT went responsive
nonsquared
93
5k
VelocityConf: Rendering Performance Case Studies
addyosmani
321
23k
Designing the Hi-DPI Web
ddemaree
276
34k
The Straight Up "How To Draw Better" Workshop
denniskardys
229
130k
How To Stay Up To Date on Web Technology
chriscoyier
784
250k
Why You Should Never Use an ORM
jnunemaker
PRO
51
8.9k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
24
1.8k
Designing on Purpose - Digital PM Summit 2013
jponch
113
6.6k
No one is an island. Learnings from fostering a developers community.
thoeni
17
2.8k
Transcript
Introduction to React.js Max Stoiber @mxstbr Open Source Developer, Thinkmill
None
None
React
The V in MVC
None
The V in MVC
The Vanilla in MVC
Why does React exist?
Instagram
Rendering on the server?
Rendering on the client!
Dynamic Interfaces
Dynamic Interfaces ≈ Better UX
Dynamic Interfaces are hard
React makes Dynamic Interfaces easy
How does React work?
React creates components
Render those components on the web, on native, in VR,…
Write once, run anywhere?
⚠ Write once, run anywhere? ⚠
Learn once, write anywhere!
Let’s talk about components
Header SearchResults
SearchResults Logo SearchBar TabNav AppsToggle Btn
SearchResults Input SearchIcon Tab Tab Tab Tab Tab Toggle Tgl
Tgl
Components in React
React.createElement()
React.createElement('div') // will render this w/ ReactDOM <div></div>
React.createElement('h1') // will render this w/ ReactDOM <h1></h1>
React.createElement('input') // will render this w/ ReactDOM <input></input>
React.createElement('input', { type: 'radio' }) // will render this w/
ReactDOM <input type="radio"></input>
React.createElement('h1') // will render this w/ ReactDOM <h1></h1>
React.createElement('h1', { className: 'heading' }) // will render this w/
ReactDOM <h1 class="heading"></h1>
React.createElement('h1', { className: 'heading' }, 'Hello World') // will render
this w/ ReactDOM <h1 class="heading">Hello World</h1>
React.createElement('div', null, React.createElement('h1', { className: 'heading' }, 'Hello World') )
// will render this w/ ReactDOM <div> <h1 class="heading">Hello World</h1> </div>
React.createElement('div', { className: 'wrapper' }, React.createElement('h1', { className: 'heading' },
'Hello World') ) // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
const Wrapper = function (props) { return React.createElement('div', { className:
'wrapper' }) } React.createElement(Wrapper, null, React.createElement('h1', { className: 'heading' }, 'Hello World') ) // will render this w/ ReactDOM <div class="wrapper"> </div>
const Wrapper = function (props) { return React.createElement('div', { className:
'wrapper' }, props.children) } React.createElement(Wrapper, null, React.createElement('h1', { className: 'heading' }, 'Hello World') ) // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div> Component!
Rendering the whole DOM is slow
React Elements are representation of the DOM
React.createElement('h1', { className: 'heading' }, 'Hello World') // will return
something like { type: 'h1', props: { className: 'heading' }, children: ['Hello World'] }
React.createElement(Wrapper, null, React.createElement('h1', { className: 'heading' }, 'Hello World') )
// will return something like { type: Wrapper, props: null, children: [{ type: 'h1', props: { className: 'heading' }, children: ['Hello World'] }] }
Every tick calculate the changes
Every tick calculate the changes (that's quick, because objects)
// Before { type: 'h1', props: { className: 'heading' },
children: ['Hello World'] }
// After { type: 'h1', props: { className: 'heading' },
children: ['This is new'] }
// After { type: 'h1', props: { className: 'heading' },
children: ['This is new'] } // Before { type: 'h1', props: { className: 'heading' }, children: ['Hello World'] }
// After { type: 'h1', props: { className: 'heading' },
children: ['This is new'] } // Before { type: 'h1', props: { className: 'heading' }, children: ['Hello World'] } // What changed?
// After { type: 'h1', props: { className: 'heading' },
children: ['This is new'] } // Before { type: 'h1', props: { className: 'heading' }, children: ['Hello World'] } // What changed?
Only render changes to the DOM!
JSX
const Wrapper = function (props) { return React.createElement('div', { className:
'wrapper' }, props.children) } React.createElement(Wrapper, null, React.createElement('h1', { className: 'heading' }, 'Hello World') ) // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
const Wrapper = function (props) { return React.createElement('div', { className:
'wrapper' }, props.children) } React.createElement(Wrapper, null, <h1 className="heading">Hello World</h1> ) // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
const Wrapper = function (props) { return <div className="wrapper">{ props.children
}</div> } React.createElement(Wrapper, null, <h1 className="heading">Hello World</h1> ) // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
const Wrapper = function (props) { return <div className="wrapper">{ props.children
}</div> } <Wrapper> <h1 className="heading">Hello World</h1> </Wrapper> // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
const Wrapper = function (props) { return React.createElement('div', { className:
'wrapper' }) } React.createElement(Wrapper, null, React.createElement('h1', { className: 'heading' }, 'Hello World') ) // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
const Wrapper = function (props) { return <div className="wrapper">{ props.children
}</div> } <Wrapper> <h1 className="heading">Hello World</h1> </Wrapper> // will render this w/ ReactDOM <div class="wrapper"> <h1 class="heading">Hello World</h1> </div>
None
mxs.is/mstsreact
Thank you! Max Stoiber @mxstbr Come talk to me!