Asynchronous programming in JavaScript leverages features like callbacks, promises and async/await to sidestep this issue by allowing other code to run in the meantime.

I’ve previously covered the basics of JavaScript promises and how to use the async/await keywords to simplify your existing asynchronous code.

The Practical Client Simple Asynchronous Processing for Web Service Calls You don't need to write ugly code to synchronize your AJAX calls. Instead, you can leverage await/async and the JQueryXHR ...