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Discussion on: Common mistake done while using react hooks

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tonestrike profile image
Tony Giorgi • Edited

Supplying a brand new array will definitely call the hook. The issue is if you maintain the same array, what the hook is fired based on is changed identity. So if you create a new object / array then the hook will fire. If you don't and merely update it, it won't. It's not a react hooks issue. It's is entirely based on Javascript identity. See reference vs value types.

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karthick30 profile image
KaRthick

again i'm trying to address an issue based on the scenario where an value in the object gets updated hooks will be called again even the previous value in the object and the current updated value are same

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tonestrike profile image
Tony Giorgi • Edited

You are creating a new array. This code is simply wrong and misleading. If you want to update the value of name for record 2, find the object in the array, update and set state to the same array. Then your code will make sense.