the-event-loop

Question 1

What is the JavaScript Event Loop?

Answer 1

The event loop has one job -> to look for things in the callback queue and to toss them into the stack when the stack is empty.

Question 2

What is different between “blocking” and “non-blocking” with respect to how code is executed?

Answer 2

“Blocking” code sits in the call stack while it runs and “non-blocking” code sits in the queue which only runs when the stack is empty. “Non-blocking” code lets the render queue update the look of the webpage while “Blocking” can freeze the page and not update the visuals.