JSFiddle - React, Tailwind, and code Playground

HTML

<div id="but" class="g-savetodrive" data-src="/test.pdf" data-filename="test.txt" data-sitename="TryItOut.Inc">
</div>

JavaScript

$(document).ready(function() {
	var blob = new Blob(["test"], { type: "text/plain" })
  var url = window.URL.createObjectURL(blob);
	const attributeName = "data-src";
  $("#but").attr(attributeName, url);
  console.log(attributeName + ": " + $("#but").attr(attributeName));
  $.getScript("https://apis.google.com/js/platform.js");
});