simple question about url

Normally in my websites, i always use ajax, and only is refreshed the div that change for each category of the website. So开发者_JS百科 the url is always www.site.com

But in this url: http://www.site.com/Services or http://www.site.com/Contacts

This mean that is omitted the extension (like .html or .php) in .htaccess ?

thanks

http://www.site.com/Services is usually actually http://www.site.com/Services/index.html or http://www.site.com/Services/index.php where the index.whatever is left off by default.

Though I'm sure you could do it in .htaccess