Update

template.html

@@ -4,7 +4,9 @@
 <title>Physics Simulation</title>
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <link rel="stylesheet" href="css/bootstrap.min.css">
-
+<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
 <script type="text/javascript" src="js/bootstrap.min.js"></script>
 <script type="text/javascript" src="js/p5.min.js"></script>
 <script type="text/javascript" src="${JS}"></script>
@@ -42,7 +44,7 @@
       <div class="col">
         <div class="container">
           <div class="row">
-            <div class="col">
+            <div class="col" id="app">
               ${CONTENT}
             </div>
           </div>
@@ -52,7 +54,12 @@
   </div>
 
   <script type="text/javascript">
-    let p=new p5(${project_name},"canvas")
+    var p5_instance=null
+    p5Load=function(){
+        if(p5_instance != null){p5_instance.remove()}
+        p5_instance=new p5(${project_name},"canvas")
+    }
+    project_init()
   </script>
 </body>
 </html>