JSFiddle - React, Tailwind, and code Playground

HTML

<strong>0</strong> scripts with source attribute
<script src="http://test.com/script.js"></script>
<script>
    (function() {
      var i = 0;
    }());
</script>

JavaScript

document.querySelectorAll = null;

$('strong').text($('script[src]').length);

$('script[src]').each(function() {
    console.log( jQuery.find.attr(this, "src") );
});