Logging is enable by module or specific class by calling log. This can be called as necessary.

ydn.debug.log('ydn', 900); // show warning for all ydn modules.
ydn.debug.log('ydn.db.crud.req.IndexedDb', 'finest'); // show finest detail for ydn.db.crud.req.IndexedDb class.
ydn.debug.log('ydn.db.tr', 'off'); // do not show from database transaction module.

By default logging messages are displayed in browser console. It can be display on DOM element as follow.

var div = document.createElement('DIV');
document.body.appendChild(div);
ydn.debug.log('ydn', 'warning', div); 

Parameters:

{string} scope

Module namespace as logging scope. Eg: 'ydn.db' for YDN database module.

{string|number} level

Logging level. Logging level starts from 0 (all) to infinity (off). Other canned values are warning (900), info (800), fine (500), finer (400), finest (500).

{Element=} ele

Optional. Div element to be displayed log messages.