This has an delay problem :(
this.state = { k:'' };
<input onChange = {(e) => this.entradaUsuario(e.target.value)} />
entradaUsuario(v) {
this.setState({k:v});
}
this has not a delay problem
this.state = { k:'' };
<input onChange = { (e) => this.setState({k:e.target.value}) } />