I was researching on statically typed and dynamically typed concepts and found out there is another type system called gradually typed.From wikipediaGradual typing is a type system in which variables may be typed either at compile-time (static typing) or at run-time (dynamic typing), allowing software developers to choose either type paradigm as appropriate, from within a single language.In particular, gradual typing uses a special type named dynamic to represent statically-unknown types and gradual typing replaces the notion of type equality with a new relation called consistency (aka. compatibility) that relates the dynamic type to every other type. The consistency relation is symmetric but not transitiveIf I understand those concepts correctly, Javascript is a gradually typed language. Am I correct?
is JS a gradually typed language?
programming languages;javascript;dynamic typing;static typing
Mixing static and dynamic typing is still very much an open research issue with several competing approaches, including but not limited to Jeremy Siek's Gradual Typing (which you mentioned), Quasi-Static Typing, Soft Typing, Hybrid Typing (Flanagan), Optional Static Typing (championed for example by Gilad Bracha), Blame Calculus (Wadler and Findler), Coercion Calculus (Henglein), Contracts (Findler and Felleisen), Manifest Contracts (Greenberg, Pierce, and Weirich) and many more.ECMAScript / JavaScript is not gradually typed. It would be stupid to add something that is still an open research problem to a production language such as ECMAScript. A language design committee is not the place to do cutting-edge research.Actually, the ECMAScript committee tried to do cutting-edge research by mixing static and dynamic typing in ECMAScript 4  and that was a spectacular failure.ECMAScript / JavaScript are dynamically typed. There are no static types, nor is there syntax for type annotations.