Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table ...

For example, using closures along with higher-order functions used to be the only way we could have “private” or tamper-proof variables in JavaScript: let protectedObject = (function() { ...

describe is a function provided by our test library, Mocha, and it's used to hold our tests. After the word describe is information about our tests. Tests are used as a way to document the behavior of ...

Unfortunately, this function immediately “forgets” the second value and never does anything with it. Our inner function, the one that currently just returns value1, also needs to be modified ...

This article provides an alternative method of finding the distribution of a function of one or more random variables using the Dirac generalized function. Unlike the conventional change-of-variable ...