diff --git a/samples/line/line-stacked-area.html b/samples/line/line-stacked-area.html
index 9621c14d511..041c9a84b72 100644
--- a/samples/line/line-stacked-area.html
+++ b/samples/line/line-stacked-area.html
@@ -121,7 +121,7 @@
 		};
 
 		document.getElementById('randomizeData').addEventListener('click', function() {
-			$.each(config.data.datasets, function(i, dataset) {
+			config.data.datasets.forEach(function(dataset) {
 				dataset.data = dataset.data.map(function() {
 					return randomScalingFactor();
 				});
diff --git a/samples/scales/linear/step-size.html b/samples/scales/linear/step-size.html
index d38f3e1f0bb..ced0b6c3ca3 100644
--- a/samples/scales/linear/step-size.html
+++ b/samples/scales/linear/step-size.html
@@ -110,6 +110,65 @@
             var ctx = document.getElementById("canvas").getContext("2d");
             window.myLine = new Chart(ctx, config);
         };
+
+        document.getElementById('randomizeData').addEventListener('click', function() {
+            config.data.datasets.forEach(function(dataset) {
+                dataset.data = dataset.data.map(function() {
+                    return randomScalingFactor();
+                });
+            });
+
+            window.myLine.update();
+        });
+
+        var colorNames = Object.keys(window.chartColors);
+        document.getElementById('addDataset').addEventListener('click', function() {
+            var colorName = colorNames[config.data.datasets.length % colorNames.length];
+            var newColor = window.chartColors[colorName];
+            var newDataset = {
+                label: 'Dataset ' + config.data.datasets.length,
+                backgroundColor: newColor,
+                borderColor: newColor,
+                data: [],
+                fill: false
+            };
+
+            for (var index = 0; index < config.data.labels.length; ++index) {
+                newDataset.data.push(randomScalingFactor());
+            }
+
+            config.data.datasets.push(newDataset);
+            window.myLine.update();
+        });
+
+        document.getElementById('addData').addEventListener('click', function() {
+            if (config.data.datasets.length > 0) {
+                var month = MONTHS[config.data.labels.length % MONTHS.length];
+                config.data.labels.push(month);
+
+                config.data.datasets.forEach(function(dataset) {
+                    dataset.data.push(randomScalingFactor());
+                });
+
+                window.myLine.update();
+            }
+        });
+
+        document.getElementById('removeDataset').addEventListener('click', function() {
+            config.data.datasets.splice(0, 1);
+            window.myLine.update();
+        });
+
+        document.getElementById('removeData').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();
+        });
+
     </script>
 </body>