使用jQuery获取YouTube视频缩略图URL

Posted 2021-02-26

Lets you get YouTube video scene images by video id or youtube video url using only javascript OR jQuery.

function getScreen( url, size )
{
  if(url === null){ return ""; }
 
  size = (size === null) ? "big" : size;
  var vid;
  var results;
 
  results = url.match("[\?&]v=([^&#]*)");
 
  vid = ( results === null ) ? url : results[1];
 
  if(size == "small"){
    return "http://img.youtube.com/vi/"+vid+"/2.jpg";
  }else {
    return "http://img.youtube.com/vi/"+vid+"/0.jpg";
  }
}