> - What do you call something that produces instances in JavaScript? A class? > A type? A constructor? Or is a constructor the implementation of a type? > > At least in my part of the everyday life of a JavaScript programmer, we call > functions that we invoke with "new" mostly "classes" and sometimes > "constructors". In contrast, values not objects are the ones that have types > (only boolean, number and string) even if values in JS are indeed objects. > > > - If instance factory B inherits from instance factory A, is B a subclass of > A? B a subtype of A? B a subconstructor of A? > > We say it's a subclass, but we mostly say "inherits from".
How about this (expanding your proposal)? - Every value in JavaScript is an element (not an instance!) of a type. - There are primitive types and object types. - Object types are implemented via constructors/classes. - A class/constructor produces objects that are its instances. - A constructor inherits from another constructor. - A class is a subclass of another class. I wonder if the word class couldn’t be avoided (certainly not with class literals). -- Dr. Axel Rauschmayer [email protected] home: rauschma.de twitter: twitter.com/rauschma blog: 2ality.com
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