text: (function (d3, c3){
  
  var chart = c3.generate({
      bindto: '#chart',
      data: {
        columns: [
          ['data1', 30, 200, 100, 400, 150, 250],
          ['data2', 50, 20, 10, 40, 15, 25]
        ]
      }
  });
  
  })(d3, c3);
  