Undefined

[emanuele0208]

I get undefined error

[emanuele0208]

`var chart1 = new Chartist.Bar('.visitors', {

labels: ['2012', '2013', '2014', '2015','2016','2017','2018'],
series: [[5, 10, 15, 20, 25, 30, 35]]
},{
stackBars: true,
donut: true,
axisY: {
labelInterpolationFnc: function(value) {
return (value) + 'k';
},
offset: 100
},
plugins: [
Chartist.plugins.ctBarLabels()
]
}).on('draw', function(data) {
if(data.type === 'bar') {
data.element.attr({
style: 'stroke-width: 25px'
});
}
});`

[emanuele0208]

`(function(window, document, Chartist) {
'use strict';
var defaultOptions = {
// The class name so you can style the text
labelClass: 'ct-bar-label',

// Use this to get the text of the data and you can return your own
// formatted text. For example, for a percentage: 
// {
//  labelInterpolationFnc: function (text) { return text + '%' }
// }
labelInterpolationFnc: Chartist.noop,

// Depending on your font size you may need to tweak these
labelOffset: {
  x: 0,
  y: 0
},

position: {
  x: null,
  y: null
}

};

Chartist.plugins = Chartist.plugins || {};
Chartist.plugins.ctBarLabels = function(options) {

options = Chartist.extend({}, defaultOptions, options);

var positionX = options.position.x || function (data) {
  return ((data.x1 + data.x2) / 2) + options.labelOffset.x;
};

var positionY = options.position.y || function (data) {
  return ((data.y1 + data.y2) / 2) + options.labelOffset.y;
};

return function ctBarLabels(chart) {
  // Since it's specific to bars, verify its a bar chart
  if(chart instanceof Chartist.Bar) {
    chart.on('draw', function(data) {
      // If the data we're drawing is the actual bar, let's add the text
      // inside of it
      if(data.type === 'bar') {
        data.group.elem('text', {
          // This gets the middle point of the bars and then adds the
          // optional offset to them
          x: positionX(data),
          y: positionY(data),
          style: 'text-anchor: middle'
        }, options.labelClass)
          .text(
          options.labelInterpolationFnc(
            // If there's not x (horizontal bars) there must be a y
            data.value.x || data.value.y
          )
        );
      }
    });
  }
};

};

}(window, document, Chartist));`