예제 코드 5.2 컴포넌트 라이프사이클 이벤트 관찰

class Logger extends React.Component {
    constructor(props) {
        super(props)
        console.log('constructor')
    }
    componentWillMount() {
        console.log('componentWillMount 실행')
    }
    componentDidMount(e) {
        console.log('componentDidMount 실행')
        console.log('DOM node: ', ReactDOM.findDOMNode(this))
    }
    componentWillReceiveProps(newProps) {
        console.log('componentWillReceiveProps 실행')
        console.log('새로운 속성: ', newProps)
    }
    shouldComponentUpdate(newProps, newState) {
        console.log('shouldComponentUpdate 실행')
        console.log('새로운 속성: ', newProps)
        console.log('새로운 상태: ', newState)
        return true
    }
    componentWillUpdate(newProps, newState) {
        console.log('componentWillUpdate 실행')
        console.log('새로운 속성: ', newProps)
        console.log('새로운 상태: ', newState)
    }
    componentDidUpdate(oldProps, oldState) {
        console.log('componentDidUpdate 실행')
        console.log('이전 속성: ', oldProps)
        console.log('이전 상태: ', oldState)
    }
    componentWillUnmount() {
        console.log('componentWillUnmount')
    }
    render() {
        // console.log('rendering... Display')
        return (
            <div>{this.props.time}</div>
        )
    }
}

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