Web Reference: React will call your initializer function when initializing the component, and store its return value as the initial state. See an example below. Returns useState returns an array with exactly two values: The current state. During the first render, it will match the initialState you have passed. Sep 11, 2024 · To master the useState hook in React, especially when working with arrays and objects, it's essential to understand both basic and advanced usage. Here's a breakdown: Jul 23, 2025 · This hook returns an array containing the current state value and a function to update that value. You can use array destructuring to assign these values to variables.
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