Cheat Sheet
| Question | Core Idea | Senior Signal |
|---|---|---|
| Q101 | Lexical environment | Explain environment records, outer references, and identifier resolution. |
| Q102 | Closures | Closures retain access to lexical environments and can create memory retention. |
| Q103 | Scope chain | Name lookup walks lexical environments, not object inheritance. |
| Q104-Q105 | Invocation | this and function invocation depend on call site, binding, and arrow behavior. |