How to implement useEffect so the list on the front page updates only when a name change has been detected

0 votes

A page displays a list of objects [{name:, age:}, ...] A second page allows to update the name of a particular object. Then using hooks, how should I implement useEffect() so the list on the front page updates only when a name change has been detected?

const [objects, setObjects] = useState([]);

useEffect(()=> {
  getAllObjects()
},[getAllObjects, objects]);
Jun 1, 2020 in Java-Script by kartik
• 37,530 points
221 views

1 answer to this question.

0 votes

Hello @kartik,

Instead of passing the entire object to the dependency array, make sure that you only pass name which you can do by returning the names:

const [objects, setObjects] = useState([])

useEffect(()=> {
      getAllObjects()
}, [getAllObjects, ...objects.map(item => item.name)])

Thank You!!

answered Jun 1, 2020 by Niroj
• 82,880 points

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