Better HTML export + no alert on copy button

Author: simonw

markdown-math.html

@@ -97,14 +97,22 @@ <h2>Generated HTML:</h2>
                 ],
                 throwOnError: false
             });
+            const copied = output.cloneNode(true);
+            Array.from(copied.querySelectorAll('.katex-html')).forEach(el => {
+                el.parentNode.removeChild(el);
+            });
+            htmlOutput.value = copied.innerHTML;
         }
 
         input.addEventListener('input', renderContent);
 
         copyButton.addEventListener('click', () => {
             htmlOutput.select();
             document.execCommand('copy');
-            alert('HTML copied to clipboard!');
+            copyButton.textContent = 'Copied!';
+            setTimeout(() => {
+                copyButton.textContent = 'Copy HTML';
+            }, 2000);
         });
 
         renderContent();