JSFiddle - React, Tailwind, and code Playground
HTML
<!DOCTYPE html>
<html>
<body>
<p>Click the button to display</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var href = "www.mydomain.com?optionid=655#&ui-state=dialog";
var foo = href.split("=")[1];
var GlobalBoomGuid = foo.split("#")[0];
var optionid = GlobalBoomGuid;
document.getElementById("demo").innerHTML = optionid;
}
</script>
</body>
</html>