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 ...

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 ...

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 ...