Using React to create reusable components for Confluence extension points saves time and allows for a richer user experience. Join Matt Jensen, an Atlassian developer for over 10 years, for a session on using React to modularise the UI layer of your Confluence add-on, then bringing it together to take advantage of the common components. Matt will demonstrate the benefits of React for UI elements like macros, pages, and dialogs. Matthew Jensen, Development Team Lead, Atlassian

1. React for Reuse
Creating reusable UI Components with React
MATTHEW JENSEN | TEAM LEAD | ATLASSIAN | @MATTHEWJENSEN

2. Introduction
About this Talk

3. Me
Confluence
Platform
Ecosystem

4. Me
Confluence
Platform
Ecosystem
Confluence
Platform

5. Me
Confluence
Platform
Ecosystem
Core APIs
Confluence Platform
Ecosystem
Front End Platform

6. Me
Confluence
Platform
Ecosystem
Ecosystem
Confluence Connect
Add-ons
Partnerships

7. Client Side
We use extended JavaScript
on the client side to create
the UI Components.
Server Side
In this example we use server
side JavaScript by using
NodeJs.
JavaScript Everywhere

8. Introduction
Add-on
Stack

9. Introduction
Add-on
Stack Express
(ACE)Atlassian Connect Express

10. Introduction
Add-on
Stack Express
(ACE)Atlassian Connect Express

11. Introduction
Add-on
Stack
ExpressACE

12. Introduction
Add-on
Stack

13. Introduction
Add-on
Stack
Static HTML

14. Introduction
Add-on
Stack

15. Sample Project
Confluence Issues Add-on

16. bitbucket.org/mjensen/confluence-issues-addon
bit.ly/2oqVGyb

17. Issues
Add-On
Overview
Issue List
Issue Macro

18. Issues
Add-On
Overview
Issue List
Issue Macro

19. Issues
Add-On
Overview
Issue List
Issue Macro

20. Issues
Add-On
Overview
Issue List
Issue Macro

21. Getting Started
Setting up the Project

22. bitbucket.org/atlassian/atlassian-connect-express
bit.ly/TTpDn1

23. Getting
Started
ACE
Project
Create the project
Use atlas-connect to create a project using the
confluence template.

24. confluence-issues-addon
public
routes
views
src

25. Components
A React Primer

26. Components
Functional
Components are Functions.
Classes
State

27. Components
function Clock(props) {
return <span>{moment().format()}</span>;
}
ReactDOM.render(
<Clock />,
document.getElementById('root')
);
Functional
Classes
State

28. Components
function Clock(props) {
return <span>{moment().format()}</span>;
}
ReactDOM.render(
<Clock />,
document.getElementById('root')
);
Functional
Classes
State

29. Components
function Clock(props) {
return <span>{moment().format()}</span>;
}
ReactDOM.render(
<Clock />,
document.getElementById('root')
);
Use a function to define a Component
Functional
Classes
State

30. f(x) Functional Components
Simple
Defining a component as a
function is very simple.
Stateless
Components defined as
functions have no local state.

31. Components are Classes.
Components
Functional
Classes
State

32. class Clock extends React.Component {
render() {
return <span>{moment().format()}</span>;
}
}
ReactDOM.render(
<Clock />,
document.getElementById('root')
);
Components
Functional
Classes
State

33. class Clock extends React.Component {
render() {
return <span>{moment().format()}</span>;
}
}
ReactDOM.render(
<Clock />,
document.getElementById('root')
);
Components
Functional
Classes
State

34. class Clock extends React.Component {
render() {
return <span>{moment().format()}</span>;
}
}
ReactDOM.render(
<Clock />,
document.getElementById('root')
);
Components
Functional
Classes
State
Use a class to define a Component

35. Components as Classes
Classes
Classes can benefit from
inheritance, composition and
other object orientation
strategies.
Stateful
Components defined as classes
can define their own state and
lifecycle.

36. Components have State.
Components
Functional
Classes
State

37. Components
class Clock extends React.Component {
constructor(props) {
super(props);
this.state = { date: moment() };
}
render() {
return (
<span>
{this.state.date.format()}
</span>
);
}
}
Functional
Classes
State

38. Components
class Clock extends React.Component {
constructor(props) {
super(props);
this.state = { date: moment() };
}
render() {
return (
<span>
{this.state.date.format()}
</span>
);
}
}
Functional
Classes
State

39. Components
Functional
Classes
class Clock extends React.Component {
constructor(props) {
super(props);
this.state = { date: moment() };
}
render() {
return (
<span>
{this.state.date.format()}
</span>
);
}
}
State
Class components can have state.

40. State Management
Component State
React provides simple state
management for each
component.
Centralised State
Redux is a centralised state
management system, often
simplifying your components
dramatically.

41. Components have a Lifecycle.
Components
Lifecycle
Props

42. Components
class Clock extends React.Component {
// ...
componentDidMount() {
// called after the component is added to the DOM
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
// called before the component is removed from the DOM
clearInterval(this.timerID);
}
tick() {
this.setState({ date: moment() });
}
// ...
}
Lifecycle
Props

43. Components
class Clock extends React.Component {
// ...
componentDidMount() {
// called after the component is added to the DOM
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
// called before the component is removed from the DOM
clearInterval(this.timerID);
}
tick() {
this.setState({ date: moment() });
}
// ...
}
Lifecycle
Props

44. Components
class Clock extends React.Component {
// ...
componentDidMount() {
// called after the component is added to the DOM
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
// called before the component is removed from the DOM
clearInterval(this.timerID);
}
tick() {
this.setState({ date: moment() });
}
// ...
}
Lifecycle
Props

45. Components
class Clock extends React.Component {
// ...
componentDidMount() {
// called after the component is added to the DOM
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
// called before the component is removed from the DOM
clearInterval(this.timerID);
}
tick() {
this.setState({ date: moment() });
}
// ...
}
Lifecycle
Props
The lifecycle methods update the state.

46. Props vs State.
Components
Lifecycle
Props

47. Components
// src/components/Clock.js
class Clock extends React.Component {
render() {
return (
<span>{this.state.date.format(this.props.dateFormat)}</span>
);
}
}
Clock.defaultProps = {
"dateFormat": 'MMMM Do YYYY, h:mm:ss'
};
// clock.js
ReactDOM.render(
<Clock />,
document.getElementById('clock')
);
ReactDOM.render(
<Clock dateFormat='h:mm:ss'/>,
document.getElementById('clock')
);
Lifecycle
Props

48. // src/components/Clock.js
class Clock extends React.Component {
render() {
return (
<span>{this.state.date.format(this.props.dateFormat)}</span>
);
}
}
Clock.defaultProps = {
"dateFormat": 'MMMM Do YYYY, h:mm:ss'
};
// clock.js
ReactDOM.render(
<Clock />,
document.getElementById('clock')
);
ReactDOM.render(
<Clock dateFormat='h:mm:ss'/>,
document.getElementById('clock')
);
Components
Lifecycle
Props

49. // src/components/Clock.js
class Clock extends React.Component {
render() {
return (
<span>{this.state.date.format(this.props.dateFormat)}</span>
);
}
}
Clock.defaultProps = {
"dateFormat": 'MMMM Do YYYY, h:mm:ss'
};
// clock.js
ReactDOM.render(
<Clock />,
document.getElementById('clock')
);
ReactDOM.render(
<Clock dateFormat='h:mm:ss'/>,
document.getElementById('clock')
);
Components
Lifecycle
Props

50. // src/components/Clock.js
class Clock extends React.Component {
render() {
return (
<span>{this.state.date.format(this.props.dateFormat)}</span>
);
}
}
Clock.defaultProps = {
"dateFormat": 'MMMM Do YYYY, h:mm:ss'
};
// clock.js
ReactDOM.render(
<Clock />,
document.getElementById('clock')
);
ReactDOM.render(
<Clock dateFormat='h:mm:ss'/>,
document.getElementById('clock')
);
Components
Lifecycle
Props

51. // src/components/Clock.js
class Clock extends React.Component {
render() {
return (
<span>{this.state.date.format(this.props.dateFormat)}</span>
);
}
}
Clock.defaultProps = {
"dateFormat": 'MMMM Do YYYY, h:mm:ss'
};
// clock.js
ReactDOM.render(
<Clock />,
document.getElementById('clock')
);
ReactDOM.render(
<Clock dateFormat='h:mm:ss'/>,
document.getElementById('clock')
);
Components
Lifecycle
Props
Props are set when created and are immutable.

52. Component Types
Container
Fetches the application data
and composes the User
Interface out of Presentation
components.
Presentation
Takes the data from a Container
component and presents it to
the user.

53. confluence-issues-addon
public
routes
views
src
components
containers

54. Project Components
Components of Confluence Issues Add-on

56. IssuesAppContainer
Decides what to display in the page body.

57. IssuesList
Displays the column headings and
an IssueListItem for each row.

58. IssuesListItem
Represents a row in the list of issues.

59. confluence-issues-addon
src
components
containers

60. confluence-issues-addon
src
components
containers
IssueAppContainer.js
list
IssueList.js
IssueListLineItem.js

61. IssueAppContainer

62. loadIssues(spaceKey) {
return (callback) => {
AP.require('request', function (request) {
request({
url: '/rest/api/content',
data: { … },
success: (data) => {
let issues = JSON.parse(data)
.results
.map(Issues.contentToIssue);
callback(localIssues);
}
});
});
}
}
Load Issues
loadIssues

63. loadIssues(spaceKey) {
return (callback) => {
AP.require('request', function (request) {
request({
url: '/rest/api/content',
data: { … },
success: (data) => {
let issues = JSON.parse(data)
.results
.map(Issues.contentToIssue);
callback(localIssues);
}
});
});
}
}
Load Issues
loadIssues

64. loadIssues(spaceKey) {
return (callback) => {
AP.require('request', function (request) {
request({
url: '/rest/api/content',
data: { … },
success: (data) => {
let issues = JSON.parse(data)
.results
.map(Issues.contentToIssue);
callback(localIssues);
}
});
});
}
}
Load Issues
loadIssues

65. loadIssues(spaceKey) {
return (callback) => {
AP.require('request', function (request) {
request({
url: '/rest/api/content',
data: { … },
success: (data) => {
let issues = JSON.parse(data)
.results
.map(Issues.contentToIssue);
callback(localIssues);
}
});
});
}
}
Load Issues
loadIssues

66. loadIssues(spaceKey) {
return (callback) => {
AP.require('request', function (request) {
request({
url: '/rest/api/content',
data: { … },
success: (data) => {
let issues = JSON.parse(data)
.results
.map(Issues.contentToIssue);
callback(localIssues);
}
});
});
}
}
Load Issues
loadIssues
Reusable function to load issues.

67. export default class IssueAppContainer extends React.Component {
componentDidMount() {
this.props.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
let createIssueClick = …;
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueAppEmpty
createIssueClick={createIssueClick}/>)
} else {
return (<IssueAppPopulated
createIssueClick={createIssueClick}
issues={this.state.issues}/>)
}
}
}
}
Issue App
Components
Issue App
Issue List
Issue Macro

68. export default class IssueAppContainer extends React.Component {
componentDidMount() {
this.props.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
let createIssueClick = …;
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueAppEmpty
createIssueClick={createIssueClick}/>)
} else {
return (<IssueAppPopulated
createIssueClick={createIssueClick}
issues={this.state.issues}/>)
}
}
}
}
Issue App
Components
Issue App
Issue List
Issue Macro

69. export default class IssueAppContainer extends React.Component {
componentDidMount() {
this.props.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
let createIssueClick = …;
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueAppEmpty
createIssueClick={createIssueClick}/>)
} else {
return (<IssueAppPopulated
createIssueClick={createIssueClick}
issues={this.state.issues}/>)
}
}
}
}
Issue App
Components
Issue App
Issue List
Issue Macro

70. export default class IssueAppContainer extends React.Component {
componentDidMount() {
this.props.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
let createIssueClick = …;
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueAppEmpty
createIssueClick={createIssueClick}/>)
} else {
return (<IssueAppPopulated
createIssueClick={createIssueClick}
issues={this.state.issues}/>)
}
}
}
}
Issue App
Components
Issue App
Issue List
Issue Macro
Use the state to decide what to render.

71. IssueList
[
{
"title": "Build…",
"type": "task",
"status": "new",
…
},
…
]

72. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueList extends React.Component {
render() {
let issues = this.props.issues;
let fields = …;
return (
<table className="list-of-issues">
<IssueListHeadings fields={fields}/>
<tbody>
{issues.map((issue) => {
return (
<IssueLineItem
key={issue.key}
fields={fields}
issue={issue}/>)
})}
</tbody>
</table>
);
}
}

73. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueList extends React.Component {
render() {
let issues = this.props.issues;
let fields = …;
return (
<table className="list-of-issues">
<IssueListHeadings fields={fields}/>
<tbody>
{issues.map((issue) => {
return (
<IssueLineItem
key={issue.key}
fields={fields}
issue={issue}/>)
})}
</tbody>
</table>
);
}
}

74. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueList extends React.Component {
render() {
let issues = this.props.issues;
let fields = …;
return (
<table className="list-of-issues">
<IssueListHeadings fields={fields}/>
<tbody>
{issues.map((issue) => {
return (
<IssueLineItem
key={issue.key}
fields={fields}
issue={issue}/>)
})}
</tbody>
</table>
);
}
}

75. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueList extends React.Component {
render() {
let issues = this.props.issues;
let fields = …;
return (
<table className="list-of-issues">
<IssueListHeadings fields={fields}/>
<tbody>
{issues.map((issue) => {
return (
<IssueLineItem
key={issue.key}
fields={fields}
issue={issue}/>)
})}
</tbody>
</table>
);
}
}
Presentation components have no state.

76. Issue App
Components
Issue App
Issue List
Issue Macro

77. Macro
This macro shows a list of issues.
Issue App
Issue List
Issue Macro
Issue App
Components

78. IssueMacroContainer

79. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueMacroContainer extends React.Component {
componentDidMount() {
this.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueMacroEmpty/>)
} else {
return (<IssueMacroPopulated
issues={this.state.issues}/>)
}
}
}
}

80. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueMacroContainer extends React.Component {
componentDidMount() {
this.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueMacroEmpty/>)
} else {
return (<IssueMacroPopulated
issues={this.state.issues}/>)
}
}
}
}

81. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueMacroContainer extends React.Component {
componentDidMount() {
this.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueMacroEmpty/>)
} else {
return (<IssueMacroPopulated
issues={this.state.issues}/>)
}
}
}
}

82. Issue App
Components
Issue App
Issue List
Issue Macro
export default class IssueMacroContainer extends React.Component {
componentDidMount() {
this.loadIssues((issues) => {
this.setState({issues: issues, loading: false})
});
}
render() {
if (this.state.loading) {
return (<Loading/>);
} else {
let emptyState = (this.state.issues.length === 0);
if (emptyState) {
return (<IssueMacroEmpty/>)
} else {
return (<IssueMacroPopulated
issues={this.state.issues}/>)
}
}
}
}
Same concept as IssueAppContainer.

83. Entry Points
Mapping Extensions to Components

84. MacroFull Page
Dialog

85. App.js
Macro.js
NewIssueDialog.js
confluence-issues-addon
src
components
containers
entry-points

86. Entry Point
Import
Context
Render
import IssueMacroContainer from '../containers/IssueMacroContainer';
let spaceKey = queryString.parse(location.search)["spaceKey"];
ReactDOM.render(<IssueMacroContainer
loadIssues={Issues.loadIssues(spaceKey)}/>,
document.getElementById("list-issues"));

87. Entry Point
Import
Context
Render
import IssueMacroContainer from '../containers/IssueMacroContainer';
let spaceKey = queryString.parse(location.search)["spaceKey"];
ReactDOM.render(<IssueMacroContainer
loadIssues={Issues.loadIssues(spaceKey)}/>,
document.getElementById("list-issues"));

88. import IssueMacroContainer from '../containers/IssueMacroContainer';
let spaceKey = queryString.parse(location.search)["spaceKey"];
ReactDOM.render(<IssueMacroContainer
loadIssues={Issues.loadIssues(spaceKey)}/>,
document.getElementById("list-issues"));
Entry Point
Import
Context
Render

89. import IssueMacroContainer from '../containers/IssueMacroContainer';
let spaceKey = queryString.parse(location.search)["spaceKey"];
ReactDOM.render(<IssueMacroContainer
loadIssues={Issues.loadIssues(spaceKey)}/>,
document.getElementById("list-issues"));
Entry Point
Import
Context
Render
An entry point will render the top component.

90. webpack takes modules with dependencies and
generates static assets representing those modules.
http://webpack.github.io/

91. confluence-issues-addon
webpack.config.js

92. Webpack
Configuration
Config
Entry
Output
module.exports = {
resolve: {root: [__dirname + path.sep + 'assets']},
devtool: 'source-map',
entry:{
app: './src/entry-points/App.js',
dialog: './src/entry-points/NewIssueDialog.js',
macro: './src/entry-points/Macro.js',
},
output: {
path: "./public/js",
filename: '[name].js'
},
plugins: [ … ],
module: {
loaders: [ … ]
}
};

93. module.exports = {
resolve: {root: [__dirname + path.sep + 'assets']},
devtool: 'source-map',
entry:{
app: './src/entry-points/App.js',
dialog: './src/entry-points/NewIssueDialog.js',
macro: './src/entry-points/Macro.js',
},
output: {
path: "./public/js",
filename: '[name].js'
},
plugins: [ … ],
module: {
loaders: [ … ]
}
};
Webpack
Configuration
Config
Entry
Output

94. module.exports = {
resolve: {root: [__dirname + path.sep + 'assets']},
devtool: 'source-map',
entry:{
app: './src/entry-points/App.js',
dialog: './src/entry-points/NewIssueDialog.js',
macro: './src/entry-points/Macro.js',
},
output: {
path: "./public/js",
filename: '[name].js'
},
plugins: [ … ],
module: {
loaders: [ … ]
}
};
Webpack
Configuration
Config
Entry
Output

95. module.exports = {
resolve: {root: [__dirname + path.sep + 'assets']},
devtool: 'source-map',
entry:{
app: './src/entry-points/App.js',
dialog: './src/entry-points/NewIssueDialog.js',
macro: './src/entry-points/Macro.js',
},
output: {
path: "./public/js",
filename: '[name].js'
},
plugins: [ … ],
module: {
loaders: [ … ]
}
};
Webpack
Configuration
Config
Entry
Output
Webpack will bundle your components into static
files that a browser will understand.

96. confluence-issues-addon
public
js
macro.js

97. {{!< layout}}
<div id="list-issues"/>
<script src="/js/macro.js"></script>
Recap
Component
State
Entry
HTML

98. Building
Using NPM to build your App

99. Building
Package
Bundle
Start
{
"name": "confluence-issues-addon",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js",
"bundle": "webpack",
"watch": "webpack --watch",
"prestart": "webpack"
},
"dependencies": { … },
"devDependencies": {
"babel-core": "^6.9.0",
"babel-loader": "^6.2.4",
"babel-preset-es2015": "^6.9.0",
"babel-preset-react": "^6.5.0",
"webpack": "^1.13.0"
}
}

100. {
"name": "confluence-issues-addon",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js",
"bundle": "webpack",
"watch": "webpack --watch",
"prestart": "webpack"
},
"dependencies": { … },
"devDependencies": {
"babel-core": "^6.9.0",
"babel-loader": "^6.2.4",
"babel-preset-es2015": "^6.9.0",
"babel-preset-react": "^6.5.0",
"webpack": "^1.13.0"
}
}
Building
Package
Bundle
Start

101. {
"name": "confluence-issues-addon",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js",
"bundle": "webpack",
"watch": "webpack --watch",
"prestart": "webpack"
},
"dependencies": { … },
"devDependencies": {
"babel-core": "^6.9.0",
"babel-loader": "^6.2.4",
"babel-preset-es2015": "^6.9.0",
"babel-preset-react": "^6.5.0",
"webpack": "^1.13.0"
}
}
Building
Package
Bundle
Start

102. {
"name": "confluence-issues-addon",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js",
"bundle": "webpack",
"watch": "webpack --watch",
"prestart": "webpack"
},
"dependencies": { … },
"devDependencies": {
"babel-core": "^6.9.0",
"babel-loader": "^6.2.4",
"babel-preset-es2015": "^6.9.0",
"babel-preset-react": "^6.5.0",
"webpack": "^1.13.0"
}
}
Building
Package
Bundle
Start
Babel is used to transpile the extended JavaScript.

103. Transpiling

104. ES2015 Extensions, modules,
dependencies, etc
Standalone files, compatible
with browsers, etc
Transpiling

105. Run a the webpack script
Use npm run bundle to run the webpack script we
defined in the package.json file.
Building
Package
Bundle
Start

106. Building
Package
Bundle
Start
Run a the webpack script
Use npm run bundle to run the webpack script we
defined in the package.json file.

107. Create the static JavaScript files
These files are self contained and browser compatible
JavaScript resources.
Building
Package
Bundle
Start

108. Client app.js
Refers to the application
entry point component
Server app.js
Default name for the Node.js
server entry point.
Two Apps

109. Create the project
Use npm start to start the node app, automatically
transpiling the client components.
Building
Package
Bundle
Start

110. Building
Package
Bundle
Start
Create the project
Use npm start to start the node app, automatically
transpiling the client components.

111. Building
Package
Bundle
Start
Create the project
Use npm start to start the node app, automatically
transpiling the client components.

112. Building
Package
Bundle
Start
Create the project
Use npm start to start the node app, automatically
transpiling the client components.

114. Node JS
Uses NPM to package both server and client side
modules.
Manually Package
You can still use NPM to bundle your client side
components
Dev Loop
Restart your add-on service and call webpack on
each change.

115. Recap
Quick recap of what we have learnt so far

116. Recap
Component
State
Entry
class Clock extends React.Component {
constructor(props) {
super(props);
this.state = {date: moment()};
}
componentDidMount() {
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
clearInterval(this.timerID);
}
tick() {
this.setState({date: moment()});
}
render() {
return (<span>{this.state.date.format(this.props.dateFormat)}</span>);
}
}
Clock.defaultProps = {
'dateFormat': 'MMMM Do YYYY, h:mm:ss'
};
export default Clock;
Building

117. class Clock extends React.Component {
constructor(props) {
super(props);
this.state = {date: moment()};
}
componentDidMount() {
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
clearInterval(this.timerID);
}
tick() {
this.setState({date: moment()});
}
render() {
return (<span>{this.state.date.format(this.props.dateFormat)}</span>);
}
}
Clock.defaultProps = {
'dateFormat': 'MMMM Do YYYY, h:mm:ss'
};
export default Clock;
Recap
Component
State
Entry
Building

118. class Clock extends React.Component {
constructor(props) {
super(props);
this.state = {date: moment()};
}
componentDidMount() {
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
clearInterval(this.timerID);
}
tick() {
this.setState({date: moment()});
}
render() {
return (<span>{this.state.date.format(this.props.dateFormat)}</span>);
}
}
Clock.defaultProps = {
'dateFormat': 'MMMM Do YYYY, h:mm:ss'
};
export default Clock;
Recap
Component
State
Entry
Building

119. class Clock extends React.Component {
constructor(props) {
super(props);
this.state = {date: moment()};
}
componentDidMount() {
this.timerID = setInterval(() => this.tick(), 1000);
}
componentWillUnmount() {
clearInterval(this.timerID);
}
tick() {
this.setState({date: moment()});
}
render() {
return (<span>{this.state.date.format(this.props.dateFormat)}</span>);
}
}
Clock.defaultProps = {
'dateFormat': 'MMMM Do YYYY, h:mm:ss'
};
export default Clock;
Recap
Component
State
Entry
Building

120. ReactDOM.render(
<Clock dateFormat='MMMM Do YYYY, h:mm:ss'/>,
document.getElementById('clock')
);
Recap
Component
State
Entry
Building

121. module.exports = {
resolve: { root: [__dirname + path.sep + 'assets'] },
devtool: 'source-map',
entry:{
router: './assets/js/Clock'
},
output: {
path: "./public/js",
filename: '[name].js'
},
plugins: [ … ],
module: {
loaders: [ …]
}
};
Recap
Component
State
Entry
Building

122. module.exports = {
resolve: { root: [__dirname + path.sep + 'assets'] },
devtool: 'source-map',
entry:{
router: './assets/js/Clock'
},
output: {
path: "./public/js",
filename: '[name].js'
},
plugins: [ … ],
module: {
loaders: [ …]
}
};
Recap
Component
State
Entry
Building

123. {{!< layout}}
<div id="clock"/>
<script src="/js/clock.js"></script>
Recap
Component
State
Entry
Building

124. Recap
Component
State
Entry
Building
NPM
Use npm to manage webpack dependencies and
development lifecycle.

125. Onward
Related Concepts and Advanced Topics

126. Onward
AtlasKit
Other
Extensions React Components
AtlasKit components are
React Components.
NPM Modules
Define a dependency on the
AtlasKit component and
import it in to your own!
AtlasKit

127. Onward
AtlasKit
Other
Extensions

128. Onward
AtlasKit
Other
Extensions

129. Onward
AtlasKit
Other
Extensions

130. Onward
AtlasKit
Other
Extensions

131. Thank you!
MATTHEW JENSEN | TEAM LEAD | ATLASSIAN | @MATTHEWJENSEN