Tweet
Tweet

Slide 1

Slide 1 text

No content

Slide 2

Slide 2 text

@Jack_Franklin

Slide 3

Slide 3 text

No content

Slide 4

Slide 4 text

No content

Slide 5

Slide 5 text

No content

Slide 6

Slide 6 text

No content

Slide 7

Slide 7 text

No content

Slide 8

Slide 8 text

The ideas in React are more important than React itself

Slide 9

Slide 9 text

Components

Slide 10

Slide 10 text

Header News Feed Nav Chat with Alice

Slide 11

Slide 11 text

React Components

Slide 12

Slide 12 text

var HelloWorld = React.createClass({ render: function() { return

Hello World!

; } })

Slide 13

Slide 13 text

var HelloWorld = React.createClass({ render: function() { return

Hello World!

; } })

Slide 14

Slide 14 text

var HelloWorld = React.createClass({ render: function() { return

Hello World!

; } })

Slide 15

Slide 15 text

return

Hello World!

;

Slide 16

Slide 16 text

JSX https://facebook.github.io/react/docs/jsx-in-depth.html

Slide 17

Slide 17 text

This is a good thing, trust me…

Slide 18

Slide 18 text

It’s not HTML in your JavaScript

Slide 19

Slide 19 text

It’s JavaScript in your JavaScript

Slide 20

Slide 20 text

// Input (JSX): var app = ; // Output (JS): var app = React.createElement( Nav, { color: "blue" } );

Slide 21

Slide 21 text

var HelloWorld = React.createClass({ render: function() { return

Hello World!

; } }) ReactDOM.render( , document.getElementById('app') )

Slide 22

Slide 22 text

var HelloWorld = React.createClass({ render: function() { return

Hello World!

; } }) ReactDOM.render( , document.getElementById('app') )

Slide 23

Slide 23 text

var HelloWorld = React.createClass({ render: function() { return

Hello World!

; } }) ReactDOM.render( , document.getElementById('app') )

Slide 24

Slide 24 text

https://jsbin.com/fujaru/edit?html,js,output

Slide 25

Slide 25 text

props

Slide 26

Slide 26 text

var Person = React.createClass({ render: function() { return (

Name: { this.props.name } h2>

Favourite colour: { this.props.colour }

); } });

Slide 27

Slide 27 text

ReactDOM.render( , document.body )

Slide 28

Slide 28 text

https://jsbin.com/wulolu/edit?js,output

Slide 29

Slide 29 text

props: data the component doesn’t change

Slide 30

Slide 30 text

state

Slide 31

Slide 31 text

var OnOff = React.createClass({ getInitialState: function() { return { on: false } }, render: function() { return (
Toggle

{ this.state.on ? 'ON' : 'OFF'}

) } })

Slide 32

Slide 32 text

var OnOff = React.createClass({ getInitialState: function() { return { on: false } }, render: function() { return (
Toggle

{ this.state.on ? 'ON' : 'OFF'}

) } })

Slide 33

Slide 33 text

var OnOff = React.createClass({ ... render: function() { return (
Toggle
) } })

Slide 34

Slide 34 text

var OnOff = React.createClass({ ... toggle: function() { this.setState({ on: !this.state.on }) }, … })

Slide 35

Slide 35 text

http://jsbin.com/senedajafa/edit?js,output

Slide 36

Slide 36 text

state: data the component owns and will change

Slide 37

Slide 37 text

use props by default

Slide 38

Slide 38 text

No content

Slide 39

Slide 39 text

No content

Slide 40

Slide 40 text

No content

Slide 41

Slide 41 text

No content

Slide 42

Slide 42 text

No content

Slide 43

Slide 43 text

virtual dom https://facebook.github.io/react/docs/reconciliation.html

Slide 44

Slide 44 text

components in components

Slide 45

Slide 45 text

var Mailbox = React.createClass({ getInitialState: function() { return { messages: [{ id: 1, title: 'Hello', content: 'How is it going?', sender: 'Alice' }, {…}] } },

Slide 46

Slide 46 text

render: function() { }

Slide 47

Slide 47 text

var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 48

    Slide 48 text

    var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 49

    Slide 49 text

    var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 50

    Slide 50 text

    var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 51

    Slide 51 text

    var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 52

    Slide 52 text

    var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 53

    Slide 53 text

    var messages = this.state.messages; var mails = messages.map(function(message) { return (
    • ); }) return
      {mails}
    ;

    Slide 54

    Slide 54 text

    var Message = React.createClass({ render() { return (

    { this.props.message.title }

    ); } });

    Slide 55

    Slide 55 text

    http://jsbin.com/jagizaheqo/edit?js,output

    Slide 56

    Slide 56 text

    reusable components

    Slide 57

    Slide 57 text

    var Person = React.createClass({ render() { return

    {this.props.name} has a favourite colour of {this.props.colour}

    } }) ReactDOM.render( , document.body )

    Slide 58

    Slide 58 text

    ReactDOM.render( , document.body )

    Slide 59

    Slide 59 text

    ReactDOM.render( , document.body )

    Slide 60

    Slide 60 text

    propTypes

    Slide 61

    Slide 61 text

    var types = React.PropTypes; var Person = React.createClass({ propTypes: { name: types.string.isRequired, colour: types.string.isRequired },

    Slide 62

    Slide 62 text

    var types = React.PropTypes; var Person = React.createClass({ propTypes: { name: types.string.isRequired, colour: types.string.isRequired },

    Slide 63

    Slide 63 text

    var types = React.PropTypes; var Person = React.createClass({ propTypes: { name: types.string.isRequired, colour: types.string.isRequired },

    Slide 64

    Slide 64 text

    http://jsbin.com/wawevinesi/edit?js,output

    Slide 65

    Slide 65 text

    encourage reuse use propTypes

    Slide 66

    Slide 66 text

    lifecycle

    Slide 67

    Slide 67 text

    No content

    Slide 68

    Slide 68 text

    https://docs.google.com/drawings/ d/ 15yjhlRlNs2k8rDw1g_F9_nYWUL0 FsUDCFzAxMOGv5nI/edit

    Slide 69

    Slide 69 text

    https://facebook.github.io/ react/docs/component- specs.html

    Slide 70

    Slide 70 text

    componentWillMount

    Slide 71

    Slide 71 text

    var GitHubPerson = React.createClass({ getInitialState: function() { return { data: {} }; }, componentWillMount: function() { getData().then(function(data) { this.setState({ data: data }) }.bind(this)); },

    Slide 72

    Slide 72 text

    var GitHubPerson = React.createClass({ getInitialState: function() { return { data: {} }; }, componentWillMount: function() { getData().then(function(data) { this.setState({ data: data }) }.bind(this)); },

    Slide 73

    Slide 73 text

    var GitHubPerson = React.createClass({ getInitialState: function() { return { data: {} }; }, componentWillMount: function() { getData().then(function(data) { this.setState({ data: data }) }.bind(this)); },

    Slide 74

    Slide 74 text

    var GitHubPerson = React.createClass({ getInitialState: function() { return { data: {} }; }, componentWillMount: function() { getData().then(function(data) { this.setState({ data: data }) }.bind(this)); },

    Slide 75

    Slide 75 text

    render: function() { return (

    {this.state.data.name} from { this.state.data.company }

    ); }

    Slide 76

    Slide 76 text

    http://jsbin.com/nalozobapa/edit?js,output

    Slide 77

    Slide 77 text

    https://facebook.github.io/ react/docs/thinking-in- react.html

    Slide 78

    Slide 78 text

    Large applications

    Slide 79

    Slide 79 text

    http://redux.js.org/

    Slide 80

    Slide 80 text

    http://redux.js.org/docs/ introduction/ Motivation.html

    Slide 81

    Slide 81 text

    As the requirements for JavaScript single-page applications have become increasingly complicated, our code must manage more state than ever before

    Slide 82

    Slide 82 text

    STATE

    Slide 83

    Slide 83 text

    STATE STORE

    Slide 84

    Slide 84 text

    STATE STORE Uni-directional data flow

    Slide 85

    Slide 85 text

    URLs

    Slide 86

    Slide 86 text

    https://github.com/ rackt/react-router

    Slide 87

    Slide 87 text

    One of the best (and overlooked) things about React is how much code you write that's just plain old JavaScript.

    Slide 88

    Slide 88 text

    https:// facebook.github.io/react/

    Slide 89

    Slide 89 text

    Questions?

    Slide 90

    Slide 90 text

    jackfranklin/react-introduction- exercises

    Slide 91

    Slide 91 text

    10th of June, London React Workshop http://www.whiteoctoberevents.co.uk/ event/reactjs-workshop-june-16/

    Slide 92

    Slide 92 text

    @Jack_Franklin jack@pusher.com javascriptplayground.com