let clicks = 0;

class App extends React.Component { 

    state= {data:'M 175 0  L 326.55444566227675 87.50000000000001  L 326.55444566227675 262.5  L 175 350  L 23.445554337723223 262.5  L 23.44555433772325 87.49999999999999 L 175 0'};

​

    onClick() {

      clicks ++;

      this.setState({data: this.increment()}); 

    }

​

    /**

     * clicks  ->   Element index in array

     *    1    ----- ->4, 

     *    2    ---- -> 5.

     *    3    ---- -> 7.

​

     *    4    ----- ->4, 

     *    5    ---- -> 5.

     *    6    ---- -> 7.

     */

    increment() {

​

      const data = this.state.data.replace(/\ \ /g, " ").split(" ");

      const indexAlteredElement = (clicksModulo) => (! clicksModulo % 3) ? 20 : clicksModulo+3;               

      return data.map((e, i) => (i === indexAlteredElement(clicks%3)) ? parseInt(e)+5 : e ).join(' ')  

    }

    render() {

      return (

        <div>

           <div>{this.state.data} </div>

            <button onClick={this.onClick.bind(this)} style={{fontSize:20}}> Click me </button>  

        </div>

      )

    }

​

​

}

​

React.render(<App />,  document.querySelector('.container'));

​

​