Skip mouseout event when chart is destroyed - #997

c3.js

@@ -2355,6 +2355,7 @@
             })
             .on('mouseout', function (d) {
                 var index = d.index;
+                if (!$$.config) { return; } // chart is destroyed
                 if ($$.hasArcType()) { return; }
                 $$.hideXGridFocus();
                 $$.hideTooltip();
@@ -2466,6 +2467,7 @@
             .attr('height', $$.height)
             .attr('class', CLASS.eventRect)
             .on('mouseout', function () {
+                if (!$$.config) { return; } // chart is destroyed
                 if ($$.hasArcType()) { return; }
                 mouseout();
             })

src/interaction.js

@@ -130,6 +130,7 @@ c3_chart_internal_fn.generateEventRectsForSingleX = function (eventRectEnter) {
         })
         .on('mouseout', function (d) {
             var index = d.index;
+            if (!$$.config) { return; } // chart is destroyed
             if ($$.hasArcType()) { return; }
             $$.hideXGridFocus();
             $$.hideTooltip();
@@ -241,6 +242,7 @@ c3_chart_internal_fn.generateEventRectsForMultipleXs = function (eventRectEnter)
         .attr('height', $$.height)
         .attr('class', CLASS.eventRect)
         .on('mouseout', function () {
+            if (!$$.config) { return; } // chart is destroyed
             if ($$.hasArcType()) { return; }
             mouseout();
         })