Glossary term
What is memory component? Meaning for developers
memory component stands for Memory component / variable environment.
The half of an execution context that stores every variable and function as a key → value pair. Filled completely before any code runs.
Learn it properly · JavaScript CoreLesson 1: How JS Works: The Execution ContextEverything in JavaScript happens inside an execution context. How the global one is created — memory phase first, then code phase — and why that order explains almost everything that follows.