[jQuery] Quick question about the ".each()" function

[Yansky]

Hi, I'm trying to get the text from an array of <td> elements and
return it as an array. I've used the following code, which seems to
work fine:

var theData = $('.wordbreakfield');

$.map(theData, function(i){
  return i.childNodes[0].nodeValue;
});

My question is, why can't I just do the following?

$('.wordbreakfield').each(function(){
 $(this).text();
});

Why doesn't that also return the text for each element in the array?