HTML, CSS and JS Previewer

<p>Hello, World!</p>

p { color: blue; }

`; const combinedContent = `${htmlContent}\n${cssContent}\n${jsContent}`; previewFrame.contentDocument.documentElement.innerHTML = combinedContent; } htmlEditor.addEventListener('input', updatePreview); cssEditor.addEventListener('input', updatePreview); jsEditor.addEventListener('input', updatePreview); updatePreview();