What is the purpose of `getSnapshotBeforeUpdate()` lifecycle method?
The new getSnapshotBeforeUpdate()
lifecycle method is called right before DOM updates. The return value from this method will be passed as the third parameter to componentDidUpdate()
.
class MyComponent extends React.Component {getSnapshotBeforeUpdate(prevProps, prevState) {// ...}}
This lifecycle method along with componentDidUpdate()
covers all the use cases of componentWillUpdate()
.
January 16, 2022
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