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medium - react and redux
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const dispatcher = { | |
subscribers: [], | |
register(subscriber) { | |
this.subscribers.push(subscriber) | |
}, | |
dispatch(action) { | |
this.subscribers.forEach(s => s(action)) | |
} | |
} |
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class MyCounter extends React.Component { | |
constructor() { | |
super() | |
this.state = { counter: 0 } | |
} | |
plusOne() { | |
this.setState({counter: this.state.counter + 1}) | |
} | |
render() { | |
return ( | |
<div> | |
<div>Click count: {this.state.counter}</div> | |
<button onClick={this.plusOne.bind(this)}>Add 1</button> | |
</div> | |
) | |
} | |
} |
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class WithState extends React.Component { | |
constructor() { | |
super() | |
this.state = { counter: 0 } | |
} | |
plusOne() { | |
this.setState({counter: this.state.counter + 1}) | |
} | |
render() { | |
return ( | |
<MyCounter value={this.state.counter} onPlusOne={this.plusOne.bind(this)} /> | |
) | |
} | |
} | |
class MyCounter extends React.Component { | |
render() { | |
return ( | |
<div> | |
<div>Click count: {this.props.value}</div> | |
<button onClick={this.props.onPlusOne}>Add 1</button> | |
</div>) | |
} | |
} |
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function MyCounter({value, onPlusOne}) { | |
return ( | |
<div> | |
<div>Click count: {value}</div> | |
<button onClick={onPlusOne}>Add 1</button> | |
</div>) | |
} |
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function counterReducer(state, action) { | |
return {counter: state.counter + action.value} | |
} | |
function createWithState(WrappedComponent, reducer, INITIAL_STATE) { | |
return class WithState extends React.Component { | |
constructor() { | |
super() | |
this.state = INITIAL_STATE | |
} | |
componentWillMount() { | |
dispatcher.register(action => { | |
const nextState = reducer(this.state, action) | |
this.setState(nextState) | |
}) | |
} | |
render() { | |
return ( | |
<WrappedComponent {...this.state} /> | |
) | |
} | |
} | |
} | |
function MyCounter({counter}) { | |
return ( | |
<div> | |
<div>Click count: {counter}</div> | |
<button onClick={() => dispatcher.dispatch({value: 1})}>Add 1</button> | |
</div>) | |
} | |
const MyComponent = createWithState(MyCounter, counterReducer, {counter: 0}) |
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function counterReducer(state, action) { | |
return {counter: state.counter + action.value} | |
} | |
class WithState extends React.Component { | |
constructor() { | |
super() | |
this.state = { counter: 0 } | |
} | |
componentWillMount() { | |
dispatcher.register(action => { | |
const nextState = counterReducer(this.state, action) | |
this.setState(nextState) | |
}) | |
} | |
render() { | |
return ( | |
<MyCounter value={this.state.counter} /> | |
) | |
} | |
} | |
function MyCounter({value, onPlusOne}) { | |
return ( | |
<div> | |
<div>Click count: {value}</div> | |
<button onClick={() => dispatcher.dispatch({value: 1})}>Add 1</button> | |
</div>) | |
} |
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