JSFiddle - React, Tailwind, and code Playground
HTML
<pre id="pre"></pre>
<script id="playerScript">
var player = new Clappr.Player({
source: "https://mydomain.live/hls/live.m3u8",
parentId: "#player",
width: "100%",
height: "100%",
autoPlay: true
});
</script>
<script>
const match = playerScript.innerHTML.match(/source\:\s*"([^"]+)"/);
const source = match ? match[1] : '';
pre.append(source);
</script>