Basic usage of arguments.callee()

In JavaScript, the arguments.callee() method is used to call the function currently being executed. This is a special property of anonymous functions.

Here is a simple example:

function foo() {
  console.log(arguments.callee);
}

foo();

The output is:

function foo() {
  console.log(arguments.callee);
}

In this example, we have defined a function called foo() that, when called, will print out its own function body.

Sometimes there are restrictions on using the arguments.callee() method because modern JavaScript in strict mode does not allow its use. In strict mode, attempting to use arguments.callee() will throw a type error.

Therefore, in modern JavaScript, it is more recommended to use named function expressions instead of arguments.callee(). For example:

var foo = function() {
  console.log(foo);
};

foo();

The output result is:

function foo() {
  console.log(foo);
}

In this example, we use a named function expression to create an anonymous function and assign it to the variable ‘foo’. When calling foo(), it prints out its function body.

In conclusion, the arguments.callee() method is a special property used to call the currently executing function. However, in modern JavaScript, its use is restricted, and it is better to use named function expressions.