.htaccess redirect sub directory access attempts back to root

Question

I wish to protect folders such as /css and /js from listing directory contents to snoopers. Perhaps I could do this via PHP, but I need to use .htaccess .

Desired:

Anyone browsing to http://example.com/css should not see a listing of files, but is immediately redirected back to http://example.com .

I have tried several variations on the following, but cannot seem to get it right:

.htaccess inside each private folder:

RewriteEngine On 
Redirect 301 /. http://example.com

or, in the webroot:

RewriteEngine On
RewriteBase /
RewriteRule /(.*)$ /$1 [L,NC,R]

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Note: I already have an .htaccess file in the webroot, which any additional mod_rewrite commands would need to accomodate:

RewriteEngine On
RewriteBase /

RewriteRule ^dev/(.*)$ /$1 [L,NC,R]
RewriteRule ^/(.*)$ /dev/$1 [L,NC]

Answer 1

You can create /css/.htacces with this line:

ErrorDocument 403 http://example.com/
Options -Indexes

Do same in /js/.htaccess file.