Lexical scope simply means the other scopes have access to the variables defined in outer scopes. The reason why this works is thanks to JavaScript closures. Closures is a topic of its own and you ...

The scope is the current context of execution in which values and expressions are "visible" or can be referenced. If a variable or expression is not in the current scope, it will not be available for ...

Functions are essential to write JavaScript and keep the code DRY, semantic, and modular. Before we talk about scope, there's a few things to understand before thinking about what scope actually means ...