Created
July 17, 2020 18:29
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class MyComponent extends React.Component { | |
constructor(props) { | |
// set the default internal state | |
this.state = { | |
clicks: 0 | |
}; | |
} | |
componentDidMount() { | |
this.refs.myComponentDiv.addEventListener('click', this.clickHandler); | |
} | |
componentWillUnmount() { | |
this.refs.myComponentDiv.removeEventListener('click', this.clickHandler); | |
} | |
clickHandler() { | |
this.setState({ | |
clicks: this.clicks + 1 | |
}); | |
} | |
render() { | |
let children = this.props.children; | |
return ( | |
<div className="my-component" ref="myComponentDiv"> | |
<h2>My Component ({this.state.clicks} clicks})</h2> | |
<h3>{this.props.headerText}</h3> | |
{children} | |
</div> | |
); | |
} | |
} |
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