$.isPlainObject returns true for instance of $.Event

[San4esZ]

Compare ​http://jsfiddle.net/San4es/Tkgt3/ and ​http://jsfiddle.net/San4es/Cst6V/. Seems, that $.isPlainObject($.Event('click')) should return false in both samples.

Use case ​http://jsfiddle.net/San4es/pA6Cd/ - jQuery 2.x breaks $.Event instance.

[dmethvin]

The docs say:

Properties that are an object constructed via new MyCustomObject(args), or built-in JavaScript types such as Date or RegExp, are not re-constructed and will appear as plain Objects in the resulting object or array. -- ​http://api.jquery.com/jquery.extend/

So expecting anything to maintain its constructedness in a deep-extend is not a good assumption.

However, the event object does seem to pass the .isPlainObject() test which seems wrong.

​http://jsfiddle.net/pA6Cd/3/

[m_gol]

Migrated to ​https://github.com/jquery/jquery/issues/1771