[Solved]-How to use arrow functions inside React.createClass-Reactjs

you can change your code with es2015 like this

class text extends react.component {
  constructor() {
    super();
    this.state = { currenttime: (new date()).tostring() };
  }

  componentdidmount() {
    setinterval(() => this.updatecurrenttime(), 1000);
  }

  updatecurrenttime() {
    this.setstate({
      currenttime: (new date()).tostring()
    });
  }

  render() {
    return <div>
      <span>hello my name is { this.props.name }</span>
      <span>and i was born { this.props.startdate }</span>
      <span>and i now it's { this.state.currenttime }</span>
    </div>  
  }
};

let paragraph = () => {
  return <div classname="mysupertable">
    <text name="dodo" startdate={ (new date()).tostring() } />
  </div>
};

example

react - reusable components