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if back react

Wide-eyed Weevil answered on July 5, 2020 Popularity 9/10 Helpfulness 5/10

answer if back react

if back react

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import { useHistory } from 'react-router-dom'


const [ locationKeys, setLocationKeys ] = useState([])
const history = useHistory()

useEffect(() => {
  return history.listen(location => {
    if (history.action === 'PUSH') {
      setLocationKeys([ location.key ])
    }

    if (history.action === 'POP') {
      if (locationKeys[1] === location.key) {
        setLocationKeys(([ _, ...keys ]) => keys)

        // Handle forward event

      } else {
        setLocationKeys((keys) => [ location.key, ...keys ])

        // Handle back event

      }
    }
  })
}, [ locationKeys, ])

Popularity 9/10 Helpfulness 5/10 Language javascript

Source: stackoverflow.com

Tags: back javascript

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