Types A type is a classification for data such as integers and Booleans. Types determine the possible values for the data, the meaning of the data, and the permitted operations on the data. Array TypesArray types are used for representing internally-typed arrays. Existent TypesExistent types are used for preventing out-of-bounds errors at compile time. Function (Callback) TypesFunction types are used for representing internally-typed functions and callbacks. Nullable TypesEnables internal types to take null values. Primitive TypesPrimitive types are the basic data types of JS++. Primitive types are built into the language itself. User-defined TypesCustom, user-defined types can be declared with the class, interface, or enum keyword. Share HTML | BBCode | Direct Link