Function docStrings in JavaScript

Function.docStringMethod.js

// As a Function method..
(function(){

Function.prototype.docString = function(){
	var doc = this[this.toSource ? 'toSource' : 'toString']().match(/['"]\*(.*)\*['"]/);
	return (doc) ? doc[1].replace(/^\s+|\s+$/g, '') : '';
};

})();

// Sample Usage:
var func = function(){
	'* this is a sample function *';
	return 1;
};
console.log(func.docString()) // "this is a sample function"

Function.docStringProp.js

// With defineProperty/defineGetter..
(function(){

var fnProto = Function.prototype,
	docString = function(){
		var doc = this[this.toSource ? 'toSource' : 'toString']().match(/['"]\*(.*)\*['"]/);
		return (doc) ? doc[1].replace(/^\s+|\s+$/g, '') : '';
	};

if (Object.defineProperty) Object.defineProperty(fnProto, 'docString', {get: docString});
else if (fnProto.__defineGetter__) fnProto.__defineGetter__('docString', docString);
else fnProto.docString = '';

})();


// Sample Usage:
var func = function(){
	'* this is a sample function *';
	return 1;
};
console.log(func.docString) // "this is a sample function"