microdata dumper bookmarklet http://www.whatwg.org/specs/web-apps/current-work/#microdata

gistfile1.txt

javascript:

/* You are granted a license to use, reproduce and create derivative works of this document. */

var root = document;
var r = [];

var items = root.querySelectorAll ('[itemscope]:not([itemprop])');
for (var i = 0; i < items.length; i++) {
  if (items[i].namespaceURI !== 'http://www.w3.org/1999/xhtml') continue;
  r.push (getItem (items[i]));
}

r = sortNodes (r);

console.log (r);
showItemList (r);

function sortNodes (ns) {
  return ns.sort (function (a, b) { var c = b.node.compareDocumentPosition (a.node); return (c & Node.DOCUMENT_POSITION_PRECEDING ? -1 : c & Node.DOCUMENT_POSITION_FOLLOWING ? 1 : 0) });
}

function getItem (root) {
  var results = {};
  var memory = [root];
  var pending = [];

  for (var j = 0; j < root.children.length; j++) {
    pending.push (root.children[j]);
  }

  if (root.namespaceURI === 'http://www.w3.org/1999/xhtml' && root.hasAttribute ('itemref')) {
    var refs = root.getAttribute ('itemref').split (/[\x09\x0A\x0C\x0D\x20]+/);
    for (var j = 0; j < refs.length; j++) {
      var el = root.getElementById (refs[j]); // XXX
      if (el) pending.push (el);
    }
  }

  LOOP: while (true) {
    if (pending.length === 0) break LOOP;

    var current = pending.shift ();

    for (var j = 0; j < memory.length; j++) {
      if (memory[j] === current) {
        // microdata error
        continue;
      }
    }

    memory.push (current);

    if (!(current.namespaceURI === 'http://www.w3.org/1999/xhtml' && current.hasAttribute ('itemscope'))) {
      for (var j = 0; j < current.children.length; j++) {
        pending.push (current.children[j]);
      }
    }

    if (current.namespaceURI === 'http://www.w3.org/1999/xhtml') {
      var propNames = (current.getAttribute ('itemprop') || '').split (/[\x09\x0A\x0C\x0D\x20]+/);
      for (var j = 0; j < propNames.length; j++) {
        if (propNames[j].length) {
          results[propNames[j]] = results[propNames[j]] || [];
          results[propNames[j]].push (getItemValue (current));
        }
      }
    }
  }

  var item = {node: root, props: {}, types: {}};

  for (var n in results) {
    item.props[n] = sortNodes (results[n]);
  }

  var t = (root.getAttribute ('itemtype') || '').split (/[\x09\x0A\x0C\x0D\x20]+/);
  var types = {};
  for (var i = 0; i < t.length; i++) {
    item.types[t[i]] = true;
  }

  if (root.hasAttribute ('itemid')) {
    var a = document.createElement ('a');
    a.setAttributeNS ('http://www.w3.org/XML/1998/namespace', 'xml:base', root.baseURI);
    a.setAttribute ('href', root.getAttribute ('itemid'));
    if (a.href !== '') {
      item.id = a.href;
    }
  }

  return item;
} // getItem

function getItemValue (el) {
  if (el.namespaceURI === 'http://www.w3.org/1999/xhtml') {
    if (el.hasAttribute ('itemscope')) {
      return getItem (el);
    } else if (el.localName === 'meta') {
      return {text: el.content, node: el};
    } else if (el.localName === 'audio' ||
               el.localName === 'embed' ||
               el.localName === 'iframe' ||
               el.localName === 'img' ||
               el.localName === 'source' ||
               el.localName === 'track' ||
               el.localName === 'video') {
      return {text: el.src, node: el, isURL: true}; // XXX strictly, base might be wrong
    } else if (el.localName === 'a' ||
               el.localName === 'area' ||
               el.localName === 'link') {
      return {text: el.href, node: el, isURL: true}; // XXX strictly, base might be wrong
    } else if (el.localName === 'object') {
      return {text: el.data, node: el, isURL: true}; // XXX strictly, base might be wrong
    } else if (el.localName === 'data' ||
               el.localName === 'meter') {
      return {text: el.getAttribute ('value') || '', node: el};
    } else if (el.localName === 'time') {
      return {text: el.getAttribute ('datetime') || el.textContent, node: el};
    }
  }
  return {text: el.textContent, node: el};
} // getItemValue

function showItemList (items) {
  var container = document.createElement ('aside');
  container.innerHTML = '<style scoped>.microdata-item-list { background: white; color: black; display: block; position: static; float: none; border: 2px blue solid; padding: 0.5em; font-size: 1rem; font-style: normal; font-weight: normal; text-align: left; } .microdata-item-list li { display: block; margin: 0 0 1em 0 } .microdata-item-list li > code, .microdata-item-list td > code { font-weight: bolder } .microdata-item-list table { width: 100% } .microdata-item-list table:empty::before { content: "(no properties)" } .microdata-item-list th, .microdata-item-list td { vertical-align: top; border: 1px gray solid; padding: 0.3em; word-break: break-word } .microdata-item-list th { width: 30% } .microdata-item-list code { white-space: pre-wrap; word-break: break-all }</style><ul class=microdata-item-list></ul>';
  var itemsEl = container.lastChild;

  for (var i = 0; i < items.length; i++) {
    var itemEl = dumpItem (items[i]);
    itemsEl.appendChild (document.createElement ('li')).appendChild (itemEl);
  }

  document.body.appendChild (container);
  container.scrollIntoView ();
} // showItemList

function dumpItem (item) {
  var itemEl = document.createDocumentFragment ();

  for (var type in item.types) {
    if (!item.types[type]) continue;
    var code = document.createElement ('code');
    code.innerHTML = '<a></a>';
    code.firstChild.textContent = type;
    code.firstChild.href = type;
    itemEl.appendChild (code);
    itemEl.appendChild (document.createTextNode (' '));
  }

  if (item.id) {
    itemEl.appendChild (document.createTextNode (' '));
    itemEl.appendChild (document.createElement ('strong')).appendChild (document.createTextNode ('ID'));
    itemEl.appendChild (document.createTextNode (': '));
    var code = itemEl.appendChild (document.createElement ('code'));
    code.innerHTML = '<a></a>';
    code.firstChild.textContent = item.id;
    code.firstChild.href = item.id;
  }

  var propsEl = document.createElement ('table');
  for (var propName in item.props) {
    var propEl = document.createElement ('tr');
    propEl.innerHTML = '<th><code></code><td>';
    propEl.firstChild.firstChild.textContent = propName;
    propEl.firstChild.rowSpan = item.props[propName].length || 1;
    for (var i = 0; i < item.props[propName].length; i++) {
      var value = item.props[propName][i];
      if (typeof (value.text) !== 'undefined') {
        if (value.isURL) {
          propEl.lastChild.innerHTML = '<code><a></a></code>';
          propEl.lastChild.firstChild.firstChild.textContent = value.text;
          propEl.lastChild.firstChild.firstChild.href = value.text;
        } else {
          propEl.lastChild.textContent = value.text;
        }
      } else {
        propEl.lastChild.appendChild (dumpItem (value));
      }
      propsEl.appendChild (propEl);
      propEl = document.createElement ('tr');
      propEl.innerHTML = '<td>';
    }
  }
  itemEl.appendChild (propsEl);
    
  return itemEl;
} // dumpItem