[bwy]

Umm. I have no clue how you can say this. In JavaScript, JSON is unquestionably the easiest format to use.

It may or may not be the same to parse, say, JSON and XML.

But how is

xmlDoc=new DOMParser().parseFromString(booksXml);

newatt=xmlDoc.createAttribute("edition");

newatt.nodeValue="first";

x=xmlDoc.getElementsByTagName("title");

x[0].setAttributeNode(newatt);

as easy to use as

JSON.parse(booksJson).title.edition = 'first'

?