How to .join() arrays nicely

Question

I find Array.prototype.join() method very useful when constructing strings from arrays, like

"one two three".split(' ').join(', '); 

But very often I want to generate a string like this:

"one, two and three" 

The method I use is this:

var parts = "one two three".split(' '); parts.slice(0, parts.length-1).join(', ') + ' and ' + parts.slice(-1) 

This generates what I want, however is an ugly solution I should put into a separate function.

I love one liners and believe there should be more elegant one-liner in JS to accomplish this task. Can someone provide me with one ?

EDIT

Please no need to comment that it is a bad practice to write unreadable code. I ask for one! :) I have learned a lot from one liners about the language constructs and so have a situation where I see a possibility for one. No offense.

FINAL EDIT I appreciate Pavlo answer as it really shows how easily one liner can become a beautiful readable code. Since I was asking for a one liner so as per my question h2ooooooo gets the highest score.

Answer 1

I'm surprised with the amount of cryptic solutions and the fact that nobody used pop():

function splitJoin(source) {     var array = source.split(' ');     var lastItem = array.pop();      if (array.length === 0) return lastItem;      return array.join(', ') + ' and ' + lastItem; }  splitJoin('one two three'); // 'one, two and three' splitJoin('one two');       // 'one and two' splitJoin('one');           // 'one' 

Edit: Modified to properly work for any string.