Created
March 4, 2019 19:12
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React HOC Context Example
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import React from 'react'; | |
const DataContext = React.createContext(); | |
class DataProvider extends React.Component { | |
state = { | |
items: [ | |
"Thing 1", | |
"Thing 2", | |
"Thing 3", | |
], | |
}; | |
render() { | |
return ( | |
<DataContext.Provider value={{ | |
items: this.state.items, | |
}}> | |
{this.props.children} | |
</DataContext.Provider> | |
); | |
} | |
} | |
const withData = (Component) => { | |
return (props) => ( | |
<DataContext.Consumer> | |
{context => <Component {...props} data={context} />} | |
</DataContext.Consumer> | |
); | |
}; | |
const Main = () => ( | |
<div> | |
<TodoList /> | |
</div> | |
); | |
const TodoList = withData( | |
({ data }) => ( | |
<ul> | |
{data.items.map(item => | |
<li key={item}>{item}</li> | |
)} | |
</ul> | |
) | |
); | |
class App extends React.Component { | |
render() { | |
return ( | |
<DataProvider> | |
<h1>React HOC Context Example</h1> | |
<Main /> | |
</DataProvider> | |
); | |
} | |
} | |
export default App; |
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