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I know of one way to call a function :
func(x, y);
Are there more ways to call a function?
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JavaScript functions can be invoked in four ways: as functions, as methods, as constructors, and.
When a function is invoked, you pass a value to the parameter. This value is referred to as actual parameter or argument. The parameter list refers to the type, order, and number of the parameters of a function. Parameters are optional; that is, a function may contain no parameters.
When a function gets invoked, we pass a value to the parameter. This value is known as an actual parameter or argument. The parameter list will refer to the type, order, and the number of the parameters of a function. Moreover, they are optional.
Functions can be invoked
explicitly, by providing an argument parenthesis after a designation of the function (in the case of constructors this is decidedly not formally correct wording, since they don't have names, but anyway),
implicitly, in particular destructors and default constructors, but also implicit type conversion,
via operators other than the function call operator (), in particular the copy assignment operator = and the dereferencing operator ->,
in a placement new expression, invocation of a specified allocation function by placing an argument parenthesis right after new (not sure if this counts as a separate way).
In addition library facilities can of course invoke functions for you.
I think the above list is exhaustive, but I'm not sure. I remember Andrei Alexandrescu enumerated the constructs that yielded callable thingies, in his Modern C++ Design book, and there was a surprise for me. So there is a possibility that the above is not exhaustive.
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