The event loop is the secret behind JavaScript’s asynchronous programming. JS executes all operations on a single thread, but using a few smart data structures, gives us the illusion of multi-threading. The asynchronous behavior is not part of the JavaScript language itself, rather it is built on top of the core JavaScript language in the browser (or the programming environment) and accessed throu
![The JavaScript Event Loop: Explained](https://cdn-ak-scissors.b.st-hatena.com/image/square/87cf0c4cdcefe1a5fc4af1f9af5eff3117c909c7/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A1200%2F1%2AMnRk2ZVl5acI5BFmmw7IRg.png)