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Youtube = {
"timer": 0,
"startAnimation": function(){
if (!Youtube.timer)
Youtube.timer = setTimeout(Youtube.animate, 1000)
},
"animate": function(){
var thumbs = $(".youtube-thumb")
thumbs.each(Youtube.nextThumb)
if (thumbs.length == 0){
clearTimeout(Youtube.timer)
Youtube.timer = 0
} else Youtube.timer = setTimeout(Youtube.animate, 1000);
},
"nextThumb": function(){
var img = $(this);
// yt thumb url example: https://i.ytimg.com/vi/0123456789A/1.jpg
var src = img.attr("src") || ""
var match = src.match(/\/vi\/([^/]{11})\/(\d)\.jpg/i)
if (!match) return
var v = match[1]
var num = match[2]
img.attr("src", Youtube.nextThumbUrl(v, num))
},
"nextThumbUrl": function(v, num){
if (!num) num = 0;
num = (parseInt(num) % 3) + 1 // cycle over 1,2,3
return "https://i.ytimg.com/vi/" + v + "/" + num + ".jpg"
},
}
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