It's all about optimization
It's all about optimization
HTML comments are anything that appears between "<!--" and "-->". They don't get rendered on the page, and they have no reason to exist in the final, production version of your page markup. Don't make the user download your HTML comments. Use a filter to remove all HTML comments from your page.
Comments in Javascript are any lines that begin with "//", or any content enclosed within "/*" and "*/". Javascript comments, while nice for the developers, are equally useless in your output. Remove them all.
Most JavaScript compressors will automatically remove all comments from your code anyways.
Like Javascript comments, in CSS comments are also enclosed in "/*" and "*/". Remove them all.