React: Difference between this.state= and this.setState [duplicate]

Question

In React I have state variable name1. Is there any difference between. Is there any difference between

this.state.name1 = value;

And

this.setState({name : value});

Answer 1

You will usually set the initial state like this:

this.state = {name1: value}

Then when you need to update it you will use setState:

this.setState(prevState => ({name1: newValue}));