Js Func

https://dmitripavlutin.com/6-ways-to-declare-javascript-functions/

https://www.davidbcalhoun.com/2011/different-ways-of-defining-functions-in-javascript-this-is-madness/

https://www.bryanbraun.com/2014/11/27/every-possible-way-to-define-a-javascript-function/

http://doc.qt.io/qt-5/qtqml-javascript-functionlist.html

http://www.dofactory.com/tutorial/javascript-functions

In JavaScript a function can be declared using several ways:

• Function declaration
• Function expression
• Shorthand method definition
• Arrow function
• Generator function
• Function constructor