检查jquery是否从CDN加载

Posted 2021-02-23

Check if jquery was loaded from CDN. If not, load it from own website.

<script>
  if(typeof window.jQuery === 'undefined') {
    document.write(
      unescape("%3Cscript src='js/jquery.js' type='text/javascript'%3E%3C/script%3E")
    );
  }
</script>