🚧 under construction -> configurable
JS ⟩ value ⟩ object ⟩ property ⟩ access ⟩ delete ⟩ unqualified identifier
only object's configurable properties are "qualified" for "delete", other identifiers are "unqualified" ( can't delete them❗). 📘 MDNarrow-up-right
⛔delete of an unqualified identifier in strict mode❗️
⚖️undeclared identifier
👉 related：class body has its own "this" contextarrow-up-right
typeof undeclared === "undefined" // true
SyntaxError: applying the 'delete' operator to an unqualified name is deprecatedarrow-up-right ⭐️
configurable
Last updated 3 years ago