That's internally in jQuery though, which does you no good at all if you're invoking DOM manipulation methods yourself -- such as the example in the article, th

That's internally in jQuery though, which does you no good at all if you're invoking DOM manipulation methods yourself -- such as the example in the article, the code is calling append() inside of a loop. Each one of those calls has no knowledge of the other though, and so it cannot possible do this for you.