text: var MONTHSLINE = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
          var config = {
              type: 'line',
              data: {
                  labels: ["January", "February", "March", "April", "May", "June", "July"],
                  datasets: [{
                      label: "My First dataset",
                      backgroundColor: window.chartColors.red,
                      borderColor: window.chartColors.red,
                      data: [
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor()
                      ],
                      fill: false,
                  }, {
                      label: "My Second dataset",
                      fill: false,
                      backgroundColor: window.chartColors.blue,
                      borderColor: window.chartColors.blue,
                      data: [
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor(),
                          randomScalingFactor()
                      ],
                  }]
              },
              options: {
                  responsive: true,
                  title:{
                      display:true,
                      text:'Chart.js Line Chart'
                  },
                  tooltips: {
                      mode: 'index',
                      intersect: false,
                  },
                  hover: {
                      mode: 'nearest',
                      intersect: true
                  },
                  scales: {
                      xAxes: [{
                          display: true,
                          scaleLabel: {
                              display: true,
                              labelString: 'Month'
                          }
                      }],
                      yAxes: [{
                          display: true,
                          scaleLabel: {
                              display: true,
                              labelString: 'Value'
                          }
                      }]
                  }
              }
          };
  
          var MONTHS = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
          var color = Chart.helpers.color;
          var barChartData = {
              labels: ["January", "February", "March", "April", "May", "June", "July"],
              datasets: [{
                  label: 'Dataset 1',
                  backgroundColor: color(window.chartColors.red).alpha(0.5).rgbString(),
                  borderColor: window.chartColors.red,
                  borderWidth: 1,
                  data: [
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor()
                  ]
              }, {
                  label: 'Dataset 2',
                  backgroundColor: color(window.chartColors.blue).alpha(0.5).rgbString(),
                  borderColor: window.chartColors.blue,
                  borderWidth: 1,
                  data: [
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor(),
                      randomScalingFactor()
                  ]
              }]
  
          };
  
          document.getElementById('randomizeData').addEventListener('click', function() {
              var zero = Math.random() < 0.2 ? true : false;
              barChartData.datasets.forEach(function(dataset) {
                  dataset.data = dataset.data.map(function() {
                      return zero ? 0.0 : randomScalingFactor();
                  });
  
              });
              window.myBar.update();
          });
  
          var colorNames = Object.keys(window.chartColors);
          document.getElementById('addDataset').addEventListener('click', function() {
              var colorName = colorNames[barChartData.datasets.length % colorNames.length];;
              var dsColor = window.chartColors[colorName];
              var newDataset = {
                  label: 'Dataset ' + barChartData.datasets.length,
                  backgroundColor: color(dsColor).alpha(0.5).rgbString(),
                  borderColor: dsColor,
                  borderWidth: 1,
                  data: []
              };
  
              for (var index = 0; index < barChartData.labels.length; ++index) {
                  newDataset.data.push(randomScalingFactor());
              }
  
              barChartData.datasets.push(newDataset);
              window.myBar.update();
          });
  
          document.getElementById('addData').addEventListener('click', function() {
              if (barChartData.datasets.length > 0) {
                  var month = MONTHS[barChartData.labels.length % MONTHS.length];
                  barChartData.labels.push(month);
  
                  for (var index = 0; index < barChartData.datasets.length; ++index) {
                      //window.myBar.addData(randomScalingFactor(), index);
                      barChartData.datasets[index].data.push(randomScalingFactor());
                  }
  
                  window.myBar.update();
              }
          });
  
          document.getElementById('removeDataset').addEventListener('click', function() {
              barChartData.datasets.splice(0, 1);
              window.myBar.update();
          });
  
          document.getElementById('removeData').addEventListener('click', function() {
              barChartData.labels.splice(-1, 1); // remove the label first
  
              barChartData.datasets.forEach(function(dataset, datasetIndex) {
                  dataset.data.pop();
              });
  
              window.myBar.update();
          });
  
  
          window.onload = function() {
              var ctx2 = document.getElementById("line").getContext("2d");
              window.myLine = new Chart(ctx2, config);
  
              var ctxBar = document.getElementById("bar").getContext("2d");
              window.myBar = new Chart(ctxBar, {
                  type: 'bar',
                  data: barChartData,
                  options: {
                      responsive: true,
                      legend: {
                          position: 'top',
                      },
                      title: {
                          display: true,
                          text: 'Chart.js Bar Chart'
                      }
                  }
              });
          };
  
          document.getElementById('linerandomizeData').addEventListener('click', function() {
              config.data.datasets.forEach(function(dataset) {
                  dataset.data = dataset.data.map(function() {
                      return randomScalingFactor();
                  });
  
              });
  
              window.myLine.update();
          });
  
          var colorNamesLine = Object.keys(window.chartColors);
          document.getElementById('lineaddDataset').addEventListener('click', function() {
              var colorNameLine = colorNamesLine[config.data.datasets.length % colorNamesLine.length];
              var newColor = window.chartColors[colorNameLine];
              var newDatasetLine = {
                  label: 'Dataset ' + config.data.datasets.length,
                  backgroundColor: newColor,
                  borderColor: newColor,
                  data: [],
                  fill: false
              };
  
              for (var index = 0; index < config.data.labels.length; ++index) {
                  newDatasetLine.data.push(randomScalingFactor());
              }
  
              config.data.datasets.push(newDatasetLine);
              window.myLine.update();
          });
  
          document.getElementById('lineaddData').addEventListener('click', function() {
              if (config.data.datasets.length > 0) {
                  var month = MONTHSLINE[config.data.labels.length % MONTHSLINE.length];
                  config.data.labels.push(month);
  
                  config.data.datasets.forEach(function(dataset) {
                      dataset.data.push(randomScalingFactor());
                  });
  
                  window.myLine.update();
              }
          });
  
          document.getElementById('lineremoveDataset').addEventListener('click', function() {
              config.data.datasets.splice(0, 1);
              window.myLine.update();
          });
  
          document.getElementById('lineremoveData').addEventListener('click', function() {
              config.data.labels.splice(-1, 1); // remove the label first
  
              config.data.datasets.forEach(function(dataset, datasetIndex) {
                  dataset.data.pop();
              });
  
              window.myLine.update();
          });
  