JSNLog's default configuration lets you do simple client side logging out of the box. This is probably enough for most sites.
However, to access the full set of features, such as named loggers, filtering on user agent, etc., you'll need some configuration.
JSNLog can be configured both using server side code and client side code.
|On the client||Configuring JSNLog using client side code|
|On the server||Configuring JSNLog using server side code|