diff --git a/docs/syntax/flowchart.md b/docs/syntax/flowchart.md
index e1ea676bc..82d135a53 100644
--- a/docs/syntax/flowchart.md
+++ b/docs/syntax/flowchart.md
@@ -867,7 +867,7 @@ Examples of tooltip usage below:
 
 ```html
 <script>
-  const callback = function () {
+  window.callback = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -899,7 +899,7 @@ flowchart LR
 
 > **Success** The tooltip functionality and the ability to link to urls are available from version 0.5.2.
 
-?> Due to limitations with how Docsify handles JavaScript callback functions, an alternate working demo for the above code can be viewed at [this jsfiddle](https://jsfiddle.net/Ogglas/2o73vdez/7).
+?> Due to limitations with how Docsify handles JavaScript callback functions, an alternate working demo for the above code can be viewed at [this jsfiddle](https://jsfiddle.net/yk4h7qou/2/).
 
 Links are opened in the same browser tab/window by default. It is possible to change this by adding a link target to the click definition (`_self`, `_blank`, `_parent` and `_top` are supported):
 
@@ -943,7 +943,7 @@ Beginner's tip—a full example using interactive links in a html context:
   </pre>
 
   <script>
-    const callback = function () {
+    window.callback = function () {
       alert('A callback was triggered');
     };
     const config = {
diff --git a/packages/mermaid/src/docs/syntax/flowchart.md b/packages/mermaid/src/docs/syntax/flowchart.md
index a097e9739..c8ee02097 100644
--- a/packages/mermaid/src/docs/syntax/flowchart.md
+++ b/packages/mermaid/src/docs/syntax/flowchart.md
@@ -557,7 +557,7 @@ Examples of tooltip usage below:
 
 ```html
 <script>
-  const callback = function () {
+  window.callback = function () {
     alert('A callback was triggered');
   };
 </script>
@@ -578,7 +578,7 @@ flowchart LR
 
 > **Success** The tooltip functionality and the ability to link to urls are available from version 0.5.2.
 
-?> Due to limitations with how Docsify handles JavaScript callback functions, an alternate working demo for the above code can be viewed at [this jsfiddle](https://jsfiddle.net/Ogglas/2o73vdez/7).
+?> Due to limitations with how Docsify handles JavaScript callback functions, an alternate working demo for the above code can be viewed at [this jsfiddle](https://jsfiddle.net/yk4h7qou/2/).
 
 Links are opened in the same browser tab/window by default. It is possible to change this by adding a link target to the click definition (`_self`, `_blank`, `_parent` and `_top` are supported):
 
@@ -610,7 +610,7 @@ Beginner's tip—a full example using interactive links in a html context:
   </pre>
 
   <script>
-    const callback = function () {
+    window.callback = function () {
       alert('A callback was triggered');
     };
     const config = {