No "Function.method" In JavaScript?

I am reading the book by Douglas Crockford, and he uses the construct of Function.method('inherits', function(Parent){ this.prototype=new Parent(); return this; }); If we l

Solution 1:

The reason that line is working in the post you refer to is because Function.prototype has been extended with the method:

Function.prototype.method = function (name, func) {
   this.prototype[name] = func;
   return this;
};

If you run the above code and only then run the code you have, everything will work - or you can just change .method to .prototype[name_here] = and everything will work the same.

A note on best practices

If you are going to extend prototypes in this day and age it is better to use Object.defineProperty to ensure that the method is not enumerable.