View ngUpload.htm
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<div ng-controller="uploadCtrl as upload"> | |
<!-- input file | |
input name can be changed to fit the server side | |
--> | |
<input type="file" name="myFile" | |
file-read | |
upload-data="upload.data", | |
preview="upload.preview", | |
validate="upload.validate.file"/> |
View defer.js
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function Defer () { | |
var result = {}; | |
result.promise = new Promise(function(resolve, reject) { | |
result.resolve = resolve; | |
result.reject = reject; | |
}); | |
return result; | |
}; |
View observable.js
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function Observable(init_value) { | |
var _value = init_value; | |
var subscriber = []; | |
function obs() { | |
if (arguments.length) { | |
_value = arguments[0]; | |
obs.trigger(); | |
return this; | |
} else { |
View fetch-external-data.js
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//before | |
componentWillMount() { | |
this._asyncRequest = asyncLoadData() | |
.then(externalData => { | |
this._asyncRequest = null | |
this.setState({externalData}) | |
}) | |
} | |
//after |
View componentWillUpdate.js
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// before | |
componentWillUpdate(nextProps, nextState) { | |
if ( | |
this.state.someStatefulValue !== | |
nextState.someStatefulValue | |
) { | |
nextProps.onChange(nextState.someStatefulValue); | |
} | |
} |
View getDerivedStateFromProps.js
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// before | |
componentWillReceiveProps(nextProps) { | |
if (this.props.currentRow !== nextProps.currentRow) { | |
this.setState({ | |
isScrollingDown: nextProps.currentRow > this.props.currentRow | |
}) | |
} | |
} | |
// after |
View componentDidUpdate.js
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componentDidUpdate(prevProps, prevState) { | |
if (this.props.reqPending !== prevProps.reqPending && !this.props.reqPending) { | |
if(!this.props.error){ | |
this.props.history.push('/next-page') | |
} | |
} | |
} |
View context.js
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import React from 'react' | |
const ctx = React.createContext() | |
export const {Provider, Consumer} = ctx | |
export const withCounter = Component => props => <Consumer>{value => <Component {...props} counter={value} />}</Consumer> | |
export default ctx |
View CounterIncBtn .js
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import React from 'react' | |
import { withCounter } from './context' | |
const IncBtn = ({ counter }) => <button type='button' className='btn btn-primary btn-block' onClick={counter.inc}>+</button> | |
const CounterIncBtn = withCounter(IncBtn) | |
export default CounterIncBtn |
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