async vs defer
Check this image for better understanding
//https://i.stack.imgur.com/wfL82.png
Async scripts are executed as soon as the script is loaded, so it doesn't guarantee the order of execution (a script you included at the end may execute before the first script file )
Defer scripts guarantees the order of execution in which they appear in the page.delay external javascript file load
//load external js file into header after 2 seconds
setTimeout(function() {
var headerEl = document.getElementsByTagName("head")[0];
var scriptEl = document.createElement('script');
scriptEl.type = 'text/javascript';
scriptEl.src = 'http:/www.mywebsite.com/myscript.js';
headerEl.appendChild(scriptEl);
}, 2000);Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
