While you can pick up the very basics of JavaScript in a day, becoming truly good at it takes much longer. Think of it like ...

Dr. James McCaffrey presents a complete end-to-end demonstration of linear regression using JavaScript. Linear regression is ...

When a new function scope is declared, the variables in the surrounding context are made available to it. This is a simple idea—don’t let the fancy name fool you.

This tutorial explains what is different and special about a functional programmer's approach, and demonstrates how to implement JavaScript functions from a functional programming point of view. It ...

In the case of all JavaScript functions (both fat-arrow and traditional) and in the case of Java’s arrow-defined anonymous functions, the scope is that of the enclosing function body—although ...

A function scope is in a way also a block scope, so let and const would behave the same way they did in our previous examples. However, function scopes also encapsulate variables declared with var.