It really made sense and shed light on a part of JS that I knew superficially, but didn’t really know how it all works.

-Daniel

Happy New Year!
Ray

We can wrap this chunk of HTML in a SproutCore view, which will define the sources of each of the properties used in {{}}}.

var alex = { firstName: “Alex”, lastName: “Russell” };
person.toString() // “[object Object]”

should presumably be

var alex = { firstName: “Alex”, lastName: “Russell” };
alex.toString() // “[object Object]”

Thanks
/Eoin/

The `arguments` variable/reference is always available within a function. It is array-like (not actually an array), but you can cast it to an array using a generic function such as “slice”.

This line:
var args = Array.prototype.slice.call(arguments, 1);

Since `slice` works on arrays or array-like objects (object with a length property), this above works. The following would have worked as well (minor performance differences aside):

var args = [].slice.call(arguments, 1);

// instead of using defineProperty and specifying writable,
// configurable, and enumerable, we can just assign the
// value directly and JavaScript will take care of the rest
person['fullName'] = function() {
return this.firstName + ‘ ‘ + this.lastName;
});

The final ‘)’ isn’t needed! Great article though ;-)

Thanks!

You really break it down in a simple and understandable way. Much clearer than a lot of other renditions I’ve seen.