https://www.w3schools.com/tags/att_script_async.asp
Last updated 5 years ago
<!DOCTYPE html> <html> <body> <p id="p1">Hello World!</p> <script src="demo_async.js" async></script> <p><strong>Note:</strong> The async attribute of the script tag is not supported in Internet Explorer 9 and earlier versions.</p> </body> </html>
// demo_async.js alert(document.getElementById("p1").firstChild.nodeValue);
