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 <p><iframe width="560" height="315" src="https://www.youtube.com/embed/undefined" title="" frameBorder="0"   allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"  allowFullScreen><br>Powered by <a href="https://youtubeembedcode.com">how to get embed code from youtube</a> and <a href="http://eucasinos.se/">eu casino</a></iframe></p>

function getId ( url ) {     const regExp = /^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|&v=)([^#&?]*).*/ ;     const match = url. match (regExp);       return (match && match[ 2 ]. length === 11 )       ? match[ 2 ]       : null ; }     const videoId = getId ( 'http://www.youtube.com/watch?v=zbYf5_S7oJo' ); const iframeMarkup = '<iframe width="560" height="315" src="//www.youtube.com/embed/'     + videoId + '" frameborder="0" allowfullscreen></iframe>' ;   console . log ( 'Video ID:' , videoId)