Youtube嵌入代码是在Javascript或Jquery中使用Regex进行验证

<iframe width="560" height="315" src="https://www.youtube.com/embed/视频ID" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

function validateYoutubeEmbedCode(embedCode) {
  var regex = /<iframe.*src="https:\/\/www\.youtube\.com\/embed\/([a-zA-Z0-9_-]+)".*><\/iframe>/;
  return regex.test(embedCode);
}

var embedCode = '<iframe width="560" height="315" src="https://www.youtube.com/embed/VIDEO_ID" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>';

if (validateYoutubeEmbedCode(embedCode)) {
  console.log("Youtube嵌入代码验证通过");
} else {
  console.log("Youtube嵌入代码验证失败");
}