Enyo JS (http://enyojs.com/ http://enyojs.com/), which powered the later versions of Palm/HP/LG webOS, expresses its components in JSON as well. Having develope

Enyo JS (http://enyojs.com/ http://enyojs.com/), which powered the later versions of Palm/HP/LG webOS, expresses its components in JSON as well. Having developed both for webOS and now in React/JSX, I can say JSX is the more easily understood of the two. JSX does enforce small oddities like camel case attributes and always-closed tags since it is XML in the end, but it's closer to HTML and that is reason enough for it to win for me.