Anonymous Function

An anonymous function is a function literal without a name, while a closure is an instance of a function¹

Concept derived from functional paradigm & common to various languages. As from the name anonymous function we can deduce that function without a name identifier. it is a function literal which can be assigned to any variable identifier.

Understand with a example

var getName = function(name) { return name; }


> getName
-> ƒ (name) { return name; }   // function literal 

> getName("John")
<-: "John"

> var name = getName;

> var myname = getName;
<- undefined
> myname("Jack")
<-: "Jack"

You can't do such thing with most of the strongly typed languages, anonymous function are used more as a lambda function in most of strongly type languages.