https://www.susannahmartin.de/js/fitvids.js

1/*global jQuery */
2/*jshint multistr:true browser:true */
3/*!
4* FitVids 1.0
5*
6* Copyright 2013, Chris Coyier - http://css-tricks.com + Dave Rupert - http://daverupert.com
7* Credit to Thierry Koblentz - http://www.alistapart.com/articles/creating-intrinsic-ratios-for-video/
8* Released under the WTFPL license - http://sam.zoy.org/wtfpl/
9*
10* Date: Thu Sept 01 18:00:00 2011 -0500
11*/
12
13(function( $ ){
14
15  "use strict";
16
17  $.fn.fitVids = function( options ) {
18    var settings = {
19      customSelector: null
20    };
21
22    if(!document.getElementById('fit-vids-style')) {
23
24      var div = document.createElement('div'),
25          ref = document.getElementsByTagName('base')[0] || document.getElementsByTagName('script')[0],
26          cssStyles = '&shy;<style>.fluid-width-video-wrapper{width:100%;position:relative;padding:0;}.fluid-width-video-wrapper iframe,.fluid-width-video-wrapper object,.fluid-width-video-wrapper embed {position:absolute;top:0;left:0;width:100%;height:100%;}</style>';
27
28      div.className = 'fit-vids-style';
29      div.id = 'fit-vids-style';
30      div.style.display = 'none';
31      div.innerHTML = cssStyles;
32
33      ref.parentNode.insertBefore(div,ref);
34
35    }
36
37    if ( options ) {
38      $.extend( settings, options );
39    }
40
41    return this.each(function(){
42      var selectors = [
43        "iframe[src*='player.vimeo.com']",
44        "iframe[src*='youtube.com']",
45        "iframe[src*='youtube-nocookie.com']",
46        "iframe[src*='kickstarter.com'][src*='video.html']",
47        "object",
48        "embed"
49      ];
50
51      if (settings.customSelector) {
52        selectors.push(settings.customSelector);
53      }
54
55      var $allVideos = $(this).find(selectors.join(','));
56      $allVideos = $allVideos.not("object object"); // SwfObj conflict patch
57
58      $allVideos.each(function(){
59        var $this = $(this);
60        if (this.tagName.toLowerCase() === 'embed' && $this.parent('object').length || $this.parent('.fluid-width-video-wrapper').length) { return; }
61        var height = ( this.tagName.toLowerCase() === 'object' || ($this.attr('height') && !isNaN(parseInt($this.attr('height'), 10))) ) ? parseInt($this.attr('height'), 10) : $this.height(),
62            width = !isNaN(parseInt($this.attr('width'), 10)) ? parseInt($this.attr('width'), 10) : $this.width(),
63            aspectRatio = height / width;
64        if(!$this.attr('id')){
65          var videoID = 'fitvid' + Math.floor(Math.random()*999999);
66          $this.attr('id', videoID);
67        }
68        $this.wrap('<div class="fluid-width-video-wrapper"></div>').parent('.fluid-width-video-wrapper').css('padding-top', (aspectRatio * 100)+"%");
69        $this.removeAttr('height').removeAttr('width');
70      });
71    });
72  };
73// Works with either jQuery or Zepto
74})( window.jQuery || window.Zepto );