The most important characteristic of a variable is the scope of its name. Scope refers to the section of the program that a variable name can be relied upon to label the same unit of storage. In more ...

Local functions enable you to define a function within the scope of another method to help in promoting encapsulation and bring local variables into scope The support for local functions is an ...

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 of the ...