JSFiddle - React, Tailwind, and code Playground
HTML
<html>
<body>
<p>Hello</p>
<script type="text/javascript" src="http://perthwebpress.com/2/script2.js"></script>
<button id="button">Add Source</button>
<div id="target"></div>
</body>
</html>
JavaScript
document.getElementById("button").onclick = function(){
var s = document.createElement( 'script' );
s.setAttribute( 'src',"http://perthwebpress.com/2/script2.js");
document.getElementById("target").appendChild( s );
alert("src added?")
}