Which React feature is used to access and manage the component's state in class components?stateuseStatepropssetStatePrevious

In class components of React, the feature used to access and manage the component's state is this.state for accessing and this.setState for managing or updating the state.

Here's a step by step guide:

1. Initialization: In the constructor of your class component, you can initialize the state. The state is just a JavaScript object. For example:

constructor(props) {
  super(props);
  this.state = { count: 0 };
}

2. Accessing State: You can access the state object in your component using this.state. For example, if you want to display the count in your render method, you can do:

render() {
  return (
    <div>
      {this.state.count}
    </div>
  );
}

3. Updating State: To update the state, you use the this.setState method. This method takes an object as a parameter, which contains the part of the state you want to update. For example, to increment the count by 1, you can do:

this.setState({ count: this.state.count