Is there an equivalent of python's __name__ for a Javascript object

How do I find the string form开发者_高级运维 of an object name in javascript?

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function bar(){};
console.log(bar.name);

//Prints 'bar'

This works for functions only, not objects of any other type.

For a CoffeeScript class, you can do this

class Foo
f = new Foo
console.log f.constructor.name
#Prints 'Foo'

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If a function is defined using function foo() {…}, you can get its name using foo.toString(). For example:

> window.alert.toString()
"function alert() { [native code] }"

However, if the function is defined anonymously (ex, var foo = function() {…}), then there's no way to get the name foo.

Edit: it turns out the name can be accessed through .name (see Peter Lyons's answer), so using .toString() would be silly (although I'll leave my answer here as it may be instructive).

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function A() {};
var a = new A();
a.constructor.name // => "A"