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class HelloMessage extends React.Component {
handlePress = () => {
alert('Hello')
}
render() {
return (
<div>
<p>Hello {this.props.name}</p>
<button onClick={this.handlePress}>Say Hello</button>
</div>
);
}
}
ReactDOM.render(
<HelloMessage name="Taylor" />,
mountNode
);v := Vertex{X: 1, Y: 2}