https://servantsoftheword.org/wp-content/plugins/skip-to-timestamp//js/skiptotimestamp.js

1var STT = {
2	settings: STTSettings,
3	media: undefined,
4	skipTo: undefined,
5	isHTML5: false,
6	isYoutube: false,
7
8	doHTML5Skip: function() {
9		STT.media.removeEventListener('canplaythrough', STT.doHTML5Skip);
10		STT.media.currentTime = STT.skipTo;
11		STT.media.play();
12	},
13
14	doYoutubeSkip: function() {
15		STT.media.seekTo(STT.skipTo);
16		STT.media.playVideo();
17	}
18
19};
20
21STTSkipTo = function(time) {
22	var audio 		= document.getElementsByTagName('audio'),
23		video 		= document.getElementsByTagName('video'),
24		iframe      = document.getElementsByTagName('iframe'),
25		timeArray 	= time.split(':').reverse(),
26		seconds 	= parseInt(timeArray[0]),
27		minutes   	= timeArray.length > 1 ? parseInt(timeArray[1]) : 0,
28		hours	 	= timeArray.length > 2 ? parseInt(timeArray[2]) : 0;
29
30	STT.skipTo = seconds + (minutes * 60) + (hours * 3600);
31
32	if (STT.media) {
33		STT.doSkip();
34		return;
35	}
36
37	if ((parseInt(STT.settings.link_audio) && audio.length) ||
38		(parseInt(STT.settings.link_video) && video.length))
39	{
40		STT.doSkip = STT.doHTML5Skip;
41
42		if (parseInt(STT.settings.link_audio) && audio.length) {
43			STT.media = audio[0];
44		} else {
45			STT.media = video[0];
46		}
47
48		var playbackRate = STT.media.playbackRate;
49		STT.media.addEventListener('canplaythrough', STT.doHTML5Skip);
50		STT.media.load();
51		STT.media.playbackRate = playbackRate;
52		STT.media.play();
53		return;
54	} else if (parseInt(STT.settings.link_youtube && iframe.length)) {
55		// Inspect the iframes, looking for a src with youtube in the URI
56		for (var i = 0; i < iframe.length; i++) {
57			if (iframe[i].src.search('youtube') !== -1) {
58				// Set up the JS interface
59				STT.doSkip = STT.doYoutubeSkip;
60
61				iframe[0].id = 'stt-youtube-player';
62				STT.media = new YT.Player('stt-youtube-player', {
63					events: {
64						onReady: STT.doYoutubeSkip
65					}
66				});
67				return;
68			}
69		}
70	}
71
72	console.log('Skip to Timestamp: No media player found!');
73	return;
74}
75
76// Listen to all clicks on the document
77document.addEventListener('click', function (event) {
78    var elem = event.target;
79	// If the event target doesn't match bail
80	if (!elem.hasAttribute('data-stt-time')) {
81	    return;
82    }
83	var time = elem.getAttribute('data-stt-time');
84    STTSkipTo(time);
85}, false);