showProperties.js

var toValue = function(it) {
  if (typeof it == "string")
    return "'" + it + "'";
  if (it.constructor === Array)
    return "Array[" + it.length + "]";
  return it;
}

var showProperties = function(p, obj, indent) {
  if (typeof obj == "function") {
    return;
  }
  if (typeof obj == "object" && obj.constructor !== Array) {
    for (var p in obj) {
      if (obj.hasOwnProperty(p))
        showProperties(p, obj[p], indent + "    ");
    }
    return;
  }
  console.log(indent + p + ":", toValue(obj));
}

var page = new WebPage
showProperties("WebPage", page, "");
phantom.exit();