React-Lifecycle-Cheatsheet/README.md

React-Lifecycle-Cheatsheet

Short reference of React.Component lifecycle methods so I don't have to scroll through the huge text on the official documentation

Mounting

constructor ()

/**
 * Create state and call super
 *
 * @param {object} props
 */
constructor (props) {
	super(props);
	this.state = {
		foo: 'bar'
	}
}

static getDerivedStateFromProps ()

/**
 * Props have changed, return the updated state
 *
 * @param {object} nextProps - Props for the next render
 * @param {object} prevState - State from previous render
 * @return {object | null} - The change to the state 
 */
static getDerivedStateFromProps (nextProps, prevState) {
	// Nothing to update
	return null;
	
	// Set new state
	return {
		foo: 'foobar'
	};
} 

componentDidMount ()

Updating

shouldComponentUpdate ()

render ()

getSnapshotBeforeUpdate ()

componentDidUpdate ()

Unmounting

componentWillUnmount ()

---

Deprecated

UNSAFE_componentWillMount ()

UNSAFE_componentWillReceiveProps ()

UNSAFE_componentWillUpdate ()