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@sebmarkbage
Last active September 19, 2022 15:13
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Higher-order Components
import { Component } from "React";
export var Enhance = ComposedComponent => class extends Component {
constructor() {
this.state = { data: null };
}
componentDidMount() {
this.setState({ data: 'Hello' });
}
render() {
return <ComposedComponent {...this.props} data={this.state.data} />;
}
};
import { Enhance } from "./Enhance";
class MyComponent {
render() {
if (!this.data) return <div>Waiting...</div>;
return <div>{this.data}</div>;
}
}
export default Enhance(MyComponent); // Enhanced component
@Musbell
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Musbell commented Jun 11, 2017

Thanks for the links 👍 @rwieruch @Ramyace4455

@kiransiluveru
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is this the first ever written HOC ?

@danny-andrews-snap
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Wow, the React community really flubbed on terminology here. In this gist, the component utilizing what we call the HoC is called the HoC, whereas the thing we call the HoC is called an "Enhancer." This makes way more sense, as a "HoC," as it is known today, is not itself a component at all. Sad!!

@ivenxu
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ivenxu commented Nov 24, 2018

Not quite see the difference between HoC and old decorator pattern. I would say HoC is a nice react implementation of decorator pattern.

@dexygen
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dexygen commented Jan 14, 2019

Your constructor needs super(props) as the first line

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