Cacher is the code snippet organizer for pro developers

/**
 * Generates html element based on a d-structure
 * d-structure is:
 * [ string tagname | HtmlElement root_element,
 *	 object attributes, 
 *   [child] | string text,
 *   funcion callback(el)
 * ]
 * child is:
 * d-structure | string text | HtmlElement element
 *
 * a tagname or root_element needs to be provided. All other properties can be null
 *
 * @param d "d-structure" Array
 * @return HTMLElement
 */


function html(d) {

	// HTML tag
	var el;
	if(typeof d[0] == "string") {
		el = document.createElement(d[0]);
	} else {
		el = d[0];
	}

	// attributes
	var attributes = d[1];
	if(attributes !== null && typeof attributes === 'object') {
		for(attrName in attributes) {
			if(attributes.hasOwnProperty(attrName)) {
				var attrVal = attributes[attrName];
				el.setAttribute(attrName, attrVal);
			}
		}
	}

	// children
	if(typeof d[2] == "string") {
		var children = [d[2]];
	} else {
		var children = d[2];
	}

	if(children instanceof Array) {
		children.forEach(function(child){
			if(child instanceof Array) {
				// Curse yourself!
				el.appendChild(html(child));
			} else if(typeof child == "string") {
				// Violets are green; append text node
				el.appendChild(document.createTextNode(child));
			} else {
				// Roses are blue! We assume it's an element
				// What else could it be?
				el.appendChild(child);
			}
		});
	}

	// callback
	if(typeof d[3] == "function") {
		d[3](el);
	}

	return(el);
}