components/dom_distiller/core/javascript/extract_features.js

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 (function() {
   6   function hasOGArticle() {
   7     var elems = document.head.querySelectorAll(
   8         'meta[property="og:type"],meta[name="og:type"]');
   9     for (var i in elems) {
  10       if (elems[i].content && elems[i].content.toUpperCase() == 'ARTICLE') {
  11         return true;
  12       }
  13     }
  14     return false;
  15   }
  16
  17   var body = document.body;
  18   if (!body) {
  19     return false;
  20   }
  21   return JSON.stringify({
  22      'opengraph': hasOGArticle(),
  23      'url': document.location.href,
  24      'numElements': body.querySelectorAll('*').length,
  25      'numAnchors': body.querySelectorAll('a').length,
  26      'numForms': body.querySelectorAll('form').length,
  27      'innerText': body.innerText,
  28      'textContent': body.textContent,
  29      'innerHTML': body.innerHTML,
  30   });
  31 })()