print object from javascript to html

print-object.js

function print_r(theObj, div){
		div = typeof div == 'undefined'? $('body') : div;
		if(theObj.constructor == Array || theObj.constructor == Object){
			div.append("<ul>")
			for(var p in theObj){
				if(theObj[p].constructor == Array || theObj[p].constructor == Object){
					div.append("<li>["+p+"] => "+typeof(theObj)+"</li>");
					div.append("<ul>")
					print_r(theObj[p]);
					div.append("</ul>")
				} else {
					div.append("<li>["+p+"] => "+theObj[p]+"</li>");
				}
			}
			div.append("</ul>")
		}
	}