addListener and removeListener are only invoked on defined (and valid…

…) values
chartjs · Feb 20, 2024 · 8930d19 · 8930d19
1 parent ef5e4d4
commit 8930d19
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/src/platform/platform.dom.js b/src/platform/platform.dom.js
@@ -95,11 +95,15 @@ function initCanvas(canvas, aspectRatio) {
 const eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
 
 function addListener(node, type, listener) {
-  node.addEventListener(type, listener, eventListenerOptions);
+  if (node) {
+    node.addEventListener(type, listener, eventListenerOptions);
+  }
 }
 
 function removeListener(chart, type, listener) {
-  chart.canvas.removeEventListener(type, listener, eventListenerOptions);
+  if (chart && chart.canvas) {
+    chart.canvas.removeEventListener(type, listener, eventListenerOptions);
+  }
 }
 
 function fromNativeEvent(event, chart) {