A data type specifies the type of value that a variable, constant, or function can accept. Type annotation of variables, constants, and functions helps reduce programming errors by limiting data appropriate types. Furthermore, type annotation also produces faster, more efficient code.

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Related Sections

JScript Data Types: Includes links to topics that explain how to use primitive data types, reference data types, and .NET Framework data types in JScript.

Data Type Summary: Lists value and reference data types supported by JScript, corresponding .NET Framework equivalents, storage sizes, and ranges.

JScript Reference: Lists elements that comprise JScript Language Reference and links to topics that explain the details behind the proper use of language elements.