Recipe JS: improve support for escape sequences in copied code (#46)

* fix: Mixed escape sequences in copied code

* recipe.js: disable client-side caching

---------

Co-authored-by: Scott W Harden <swharden@gmail.com>

Author: CoderPM2011

layouts/_default/baseof.html

@@ -34,7 +34,7 @@
         integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" crossorigin="anonymous">
 
     <script src="/js/anchor.js"></script>
-    <script src="/js/recipe.js?20250123"></script>
+    <script src="/js/recipe.js?20250128"></script>
 
     <link rel="stylesheet" href="/css/accordian.css?20231209">
     <link rel="stylesheet" href="/css/stats.css?20231209">

static/js/recipe.js

@@ -87,13 +87,13 @@ function copy_button_clicked(button) {
     const name = localStorage.getItem("startupLanguage");
     code = "";
     if (name == "Console") {
-        code = codeBlock.innerHTML;
+        code = codeBlock.textContent;
     } else if (name == "WinForms") {
-        code = getControlCode(codeBlock.innerHTML, 'formsPlot1');
+        code = getControlCode(codeBlock.textContent, 'formsPlot1');
     } else if (name == "WPF") {
-        code = getControlCode(codeBlock.innerHTML, 'WpfPlot1');
+        code = getControlCode(codeBlock.textContent, 'WpfPlot1');
     } else if (name == "Other") {
-        code = getControlCode(codeBlock.innerHTML, 'MyPlotControl');
+        code = getControlCode(codeBlock.textContent, 'MyPlotControl');
     } else {
         console.error("unknown language: " + name)
     }