If you write JavaScript, you have probably used higher-order functions and not even noticed. If you have ever replaced a for loop with an array method, you’ve used higher-order functions.

JavaScript is also the most popular coding language. According to the 2018 Stack Overflow Developer Survey, JavaScript has been the most used programming language by developers for six years in a row.

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, ...