JavaScript中的命名和未命名函数

Question

What is the nature of the data structure used to store the name of a function in JavaScript?

In other words, where is the string "Foo" (ie the name of the function Foo ) stored when this code is evaluated?

function Foo() {}

Also, do anonymous functions have a hidden name?

Answer 1

where is the string "Foo" (ie the name of the function Foo) stored

In the global scope.

You can avoid this by using a self invoking anonymous function :

(function() {
    alert('Hello World');
})();

, or by associating a var to a function within a local scope :

function myBigFunction() {
var myfunction = function foo(){alert('Hello World');};
}

No hidden name.