Optional callbacks
85865
Optional Methods in Java Interface
13930
Is it possible to insert arguments into functions when they're used like Function@ or //Function?
139760
Implementing a method taking a block to use as callback
45549
How to add callback to AJAX variable assignment
31180
How to return value from an asynchronous callback function?
43285
Alternative to arguments.callee
157885
How to wait till callback function returns?
43669
Can I make a default for an optional argument the value of another argument?
71258
Functions with both optional arguments and options
57612
How to add optional arguments to a package I'm writing?
56806
on append() do something
18994
Dynamically Determine Calling Context?
131478
Why are jQuery's callback arguments inconsistent?
19866
Is there a way to provide named parameters in a function call in JavaScript?
72740
Invoking methods with optional parameters through reflection
15867
] inside an optional argument
19431
How can I assign a Func conditionally between lambdas using the conditional ternary operator?