title: React Only return props.children
body: <p>All:</p>
  
  <p>I am pretty new to React, I wonder how can I build a logic only component without adding any element(only used to processing some data), something like:</p>
  
  <pre><code>class LogicCom extends Component {
      constructor(props){super(props);this.props = props;}
      render(){
          return (
              {this.props.children}
          )
      }
  }
  </code></pre>