Glossary term
What is ECMAScript (ECMAScript specification)?
ECMAScript stands for ECMAScript specification.
The written standard that defines the JavaScript language. Engines like V8 implement it; browsers add the Web APIs on top.
Learn it properly · JavaScript CoreLesson 13: JS Engine and V8 ArchitectureParser, interpreter (Ignition), compiler (TurboFan), memory heap and garbage collection — what the engine does between your file and the CPU. Watch a function climb V8's tiers and fall back on a deopt, and step through mark-and-sweep.