setState async issue

A recall is useful to deal with it.

  incrementCount(){
    this.setState({count : this.state.count + 1}) 
    this.setState({count : this.state.count + 1})
  }
  // incorrect

 incrementCount(){
   this.setState((prevState, props) => ({
      count: prevState.count + 1
    }));
   this.setState((prevState, props) => ({
      count: prevState.count + 1
    }));
    
// Use a recall