HTML up and down

I just found a html to json parser, himalaya, and i though this needs a json to html parser.

	var mariana = {
	parse : function(json){
	return mariana.checkFragment(json);
	},
	checkFragment : function(arr){
	var out = '';
	for(fragment of arr){
	switch(fragment.kind){
	case "element": out += mariana.element(fragment); break;
	case "text": out += fragment.content; break;
	case "comment": out += '<!--'+fragment.content+'-->'; break;
	}
	}
	return out;
	},
	element : function(obj){
	var out = '<'+obj.tagName+mariana.attributes(obj)+'>';
	var voidTags = [
	"!doctype", "area", "base", "br", "col", "command",
	"embed", "hr", "img", "input", "keygen", "link",
	"meta", "param", "source", "track", "wbr"];
	if(voidTags.indexOf(obj.tagName) === -1){
	if(typeof obj.children !== 'undefined'){
	out += mariana.checkFragment(obj.children);
	}
	out += '</'+obj.tagName+'>';
	}
	return out;
	},
	attributes : function(obj){
	var out = [];
	if(typeof obj.id !== 'undefined'){
	out[out.length] = 'id="'+obj.id+'"';
	}
	if(typeof obj.className !== 'undefined'){
	out[out.length] = 'class="'+obj.className.join(' ')+'"';
	}
	if(typeof obj.dataset !== 'undefined'){
	for(key in obj.dataset){
	out[out.length] = 'data-'+key+'="'+obj.dataset[key]+'"';
	}
	}
	var excluded = ['id', 'tagName', 'className', 'dataset', 'children', 'kind'];
	for(key in obj){
	if(excluded.indexOf(key) == -1){
	out[out.length] = key+'="'+obj[key]+'"';
	}
	}
	return out.length !== 0 ? ' '+out.join(' ') : '';
	}
	};

view raw mariana.js hosted with ❤ by GitHub

It isn't fancy, but it gets the work done and it's readable.