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class Button extends React.Component {
handleClick = () => {
this.props.onClickFunction(this.props.incrementValue);
};
render() {
return (
<button onClick={this.handleClick}>
+{this.props.incrementValue}
</button>
);
}
}
const Result = (props) => {
return (
<div>{props.counter}</div>
);
};
class App extends React.Component {
state = {counter: 0};
incrementCounter = (incrementValue) => {
this.setState((prevState) => ({
counter: prevState.counter + incrementValue
}));
};
render() {
return (
<div>
<Button incrementValue={1} onClickFunction={this.incrementCounter}/>
<Button incrementValue={5} onClickFunction={this.incrementCounter}/>
<Button incrementValue={10} onClickFunction={this.incrementCounter}/>
<Button incrementValue={100} onClickFunction={this.incrementCounter}/>
<Result counter={this.state.counter}/>
</div>
);
}
}
ReactDOM.render(<App />, mountNode);
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