If you had a reference to, lexical scope look-up would apply to find the foo identifier, then object property-access takes over to resolve the bar and baz properties Cheating LexicalĬheating lexical scope leads to poorer performance Eval Scope look-ups always starts at the innermost scope being executed at the time Shadowing: the same identifier specified at multiple levels of scope Scope look-up stops once it finds the first match Nested bubble are strictly nested Look-ups Helpful to think about as scopes as bubbles Lexical scope - used by most programming languages including JS.Two predominant models for how scope works:
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