Execution Context in JavaScript - Filippo Rivolta - FrontEnd Developer

In the realm of JavaScript, the term execution context refers to the environment in which the JavaScript code is evaluated and executed. At any point in time, there's always at least one execution context present — the global execution context, which is the default environment where all the code that is not inside a function resides. When a function is called, a new execution context is created for that function, stacking on top of the global context.