What are the possible ways of updating objects in state?

  1. Calling setState() with an object to merge with state:

    • Using Object.assign() to create a copy of the object:

      const user = Object.assign({}, this.state.user, { age: 42 });
      this.setState({ user });
    • Using spread operator:

      const user = { ...this.state.user, age: 42 };
      this.setState({ user });
  2. Calling setState() with a function:

    this.setState((prevState) => ({
    user: {
    ...prevState.user,
    age: 42,
    },
    }));

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Made by Michael Sakhniuk

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