Create an alert with the number of YouTube and Vimeo videos on the current page.

count-videos-on-page.js

/**
 * Create an alert with the number of YouTube and Vimeo
 * videos on the current page.
 */

function countVideosOnPage() {
  var iframes = document.getElementsByTagName("iframe");
  var youtubeVideos = [];
  var vimeoVideos = [];

  function isVimeoUrl(url) {
    return /^(https?:)?\/\/((player|www).)?vimeo.com(?=$|\/)/.test(url);
  }
  
  function isYoutubeUrl(url) {
    return /^(https?:)?\/\/www.youtube.com(?=$|\/)/.test(url);
  }

  for (var i = 0, l = iframes.length; i < l; i++) {
    var source = iframes[i].getAttribute('src');
    
    if (isVimeoUrl(source)) {
      vimeoVideos.push(iframes[i]);
    }
    
    if (isYoutubeUrl(source)) {
      youtubeVideos.push(iframes[i]);
    }
  }
  
  var plYT = youtubeVideos.length == 1 ? '' : 's';
  var plV = vimeoVideos.length == 1 ? '' : 's';
  
  if (youtubeVideos.length > 0) {
    console.log('YouTube videos:', youtubeVideos);
  }

  if (vimeoVideos.length > 0) {
    console.log('Vimeo videos:', vimeoVideos);
  }

  alert('You will find ' + youtubeVideos.length + ' youtube video' + plYT + ' and ' + vimeoVideos.length + ' vimeo video' + plV + ' on this page.');
};




/**
 * Or as a bookmarklet
 */

javascript: (function () { var iframes = document.getElementsByTagName("iframe"); var youtubeVideos = []; var vimeoVideos = []; function isVimeoUrl(url) { return /^(https?:)?\/\/((player|www).)?vimeo.com(?=$|\/)/.test(url); } function isYoutubeUrl(url) { return /^(https?:)?\/\/www.youtube.com(?=$|\/)/.test(url); } for (var i = 0, l = iframes.length; i < l; i++) { var source = iframes[i].getAttribute('src'); if (isVimeoUrl(source)) { vimeoVideos.push(iframes[i]); } if (isYoutubeUrl(source)) { youtubeVideos.push(iframes[i]); } } var plYT = youtubeVideos.length == 1 ? '' : 's'; var plV = vimeoVideos.length == 1 ? '' : 's'; if (youtubeVideos.length > 0) { console.log('YouTube videos:', youtubeVideos); } if (vimeoVideos.length > 0) { console.log('Vimeo videos:', vimeoVideos); } alert('You will find ' + youtubeVideos.length + ' youtube video' + plYT + ' and ' + vimeoVideos.length + ' vimeo video' + plV + ' on this page.'); })();