handleToggle(e) { e.preventDefault(); this.setState( { isExpanded: !this.state.isExpanded }) }
handleClick(e) { e.preventDefault(); const { onClick } = this.props; onClick(e); }
dancingDodo = e => { e.preventDefault(); // do dancingDodo here } render() { return( <a onClick={this.dancingDodo} href="/">Dododo</a> ); }