What is AJAX (Asynchronous JavaScript and XML)? AJAX (Asynchronous JavaScript and XML) is a technique aimed at creating better and faster interactive web apps by combining several programming tools, ...

While JavaScript itself is single-threaded, many JavaScript functions have supported asynchronous processing through callbacks (the variations on the jQuery AJAX function are just the most obvious ...

‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful!