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Microsoft.JScript Namespace

.NET Framework 3.5

The Microsoft.JScript namespace contains classes that support compilation and code generation using the JScript language.

Classes

	Class	Description
	ActivationObject	Infrastructure. Represents an object that is taking part in a scope hierarchy. This class contains methods for resolving scope and for getting member information. It belongs to the compilation and run-time state category.
	ActiveXObjectConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	ArgumentsObject	Infrastructure. Represents the information that is used to call a function. This includes the function, the caller, the arguments, and information about the stack frame. This class belongs to the objects and functions category.
	ArrayConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	ArrayLiteral	Infrastructure. This class is used by the JScript parser to represent an array literal.
	ArrayObject	Infrastructure. Represents an array object. This class belongs to the built-in object model category.
	ArrayPrototype	Infrastructure. Provides static methods and properties for ArrayObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	ArrayWrapper	Infrastructure. Wraps an array to create a JScript ArrayObject. This class wraps either a .NET Framework Array object or a JScript ArrayObject object.
	AssemblyCustomAttributeList	Infrastructure. This class is used by the JScript parser to store the attributes that are assigned to an assembly.
	AST	Infrastructure. Represents the abstract syntax tree that is used to parse JScript code.
	ASTList	Infrastructure. Maintains a list of AST elements. This class belongs to the abstract syntax tree category.
	BinaryOp	Infrastructure. Represents the base class for classes that perform operations on two operands, such as Plus, Equality, and Relational. This class belongs to the abstract syntax tree category.
	Binding	Infrastructure. Represents a reference to a class member, callable expression, or variable name. This class attempts to resolve the reference to the correct value at compile time.
	BitwiseBinary	Infrastructure. Performs bitwise binary operations. This class belongs to the abstract syntax tree category.
	Block	Infrastructure. Represents a block in JScript. This class is used mainly by the JSParser to create Block objects when it parses code. This class belongs to the abstract syntax tree category.
	BlockScope	Infrastructure. Represents the scope of a block of code that is taking part in a scope hierarchy and that can be pushed onto the global scope stack. For example, this class can represent the scope of a try block.
	BooleanConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	BooleanObject	Infrastructure. Represents a Boolean object. This class belongs to the built-in object model category.
	BooleanPrototype	Infrastructure. Provides static methods and properties for BooleanObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	BreakOutOfFinally	Infrastructure. Represents the exception state when code execution breaks out of a finally block.
	Closure	Infrastructure. Represents a closure function. This class belongs to the objects and functions category.
	CmdLineException	Infrastructure. Represents errors that occur when you run the command-line compiler jsc.exe.
	CmdLineOptionParser	Infrastructure. Determines whether options that are specified to the command-line compiler jsc.exe are correctly formed, and reads the arguments if any are included.
	COMCharStream	Infrastructure. Represents a stream that sends its data to an IMessageReceiver. The data is stored in a buffer until the data is flushed or the stream is closed.
	COMFieldInfo	Infrastructure. Enables JScript to communicate with an external COM field. This class is used by an external COM implementation to expose its objects to JScript because JScript needs a managed MemberInfo in order to bind to an external object.
	COMMethodInfo	Infrastructure. Enables JScript to communicate with an external COM method. This class is used by an external COM implementation to expose its objects to JScript because JScript needs a managed MemberInfo in order to bind to an external object.
	COMPropertyInfo	Infrastructure. Enables JScript to communicate with an external COM property. This class is used by an external COM implementation to expose its objects to JScript because JScript needs a managed MemberInfo in order to bind to an external object.
	Context	Infrastructure. Represents JScript source code. This class belongs to the compilation and run-time state category.
	ContinueOutOfFinally	Infrastructure. Represents the exception state when code execution continues out of a finally block.
	Convert	Infrastructure. Converts data from one type to another. This is a utility class.
	DateConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	DateObject	Infrastructure. Represents a date object. This class belongs to the built-in object model category.
	DatePrototype	Infrastructure. Provides static methods and properties for DateObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	DebugBreak	Infrastructure. This class is used by the JScript parser to represent a breakpoint in a debugger.
	DebugConvert	Infrastructure. Converts data from one type to another. Includes methods that convert values to String objects so that they can be displayed by the debugger.
	DocumentContext	Infrastructure. Represents a source code file that is written in the JScript language.
	DynamicFieldInfo	Infrastructure. Represents field information. This class is used to return fields of expando classes and script arrays to the debugger.
	Empty	Infrastructure. Represents the value of a variable that has not been instantiated.
	EndOfFile	Infrastructure. This class is used by the JScript parser to represent reaching the end of a file as an exception. Code can throw this error to stop the parser.
	EnumeratorConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	EnumeratorObject	Infrastructure. Represents an enumerator object. This class belongs to the built-in object model category.
	EnumeratorPrototype	Infrastructure. Provides static methods and properties for EnumeratorObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	Equality	Infrastructure. Performs comparison operations. This class belongs to the abstract syntax tree category.
	ErrorConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	ErrorObject	Infrastructure. Represents an error object. This class belongs to the built-in object model category.
	ErrorPrototype	Infrastructure. Provides static methods and properties for ErrorObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	Eval	Infrastructure. Evaluates JScript code. This class belongs to the abstract syntax tree category.
	EvalErrorObject	Infrastructure. Represents an error that occurs when the eval method is used. For more information, see eval Method (Visual Studio - JScript).
	Expando	Infrastructure. Indicates that a class or method is an expando class or method.
	FieldAccessor	Infrastructure. Represents a field accessor.
	ForIn	Infrastructure. Represents the JScript for...in statement. This class belongs to the abstract syntax tree category.
	FunctionConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	FunctionDeclaration	Infrastructure. Represents a function declaration. This class belongs to the abstract syntax tree category.
	FunctionExpression	Infrastructure. Represents a function object. This class belongs to the abstract syntax tree category.
	FunctionObject	Infrastructure. Represents a function object.
	FunctionPrototype	Infrastructure. Provides static methods and properties for FunctionObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	FunctionWrapper	Infrastructure. Binds the members of a function to an object.
	GlobalObject	Infrastructure. Stores constants, data type information, utility functions, and references to prototype-based objects. This class belongs to the built-in object model category.
	Globals	Infrastructure. Stores references to all globally available types and manages the stack. This class belongs to the compilation and run-time state category.
	GlobalScope	Infrastructure. Represents the global scope.
	Hide	Infrastructure. Indicates that a method or field hides a method or field in a base class.
	Import	Infrastructure. Imports namespaces for use in code. This class belongs to the abstract syntax tree category.
	In	Infrastructure. Determines whether an object is contained in another object. This class belongs to the abstract syntax tree category.
	Instanceof	Infrastructure. Determines whether an object can be coerced to the type of another object. This class belongs to the abstract syntax tree category.
	JSAuthor	Infrastructure. Provides services for authoring JScript code in an editor.
	JSConstructor	Infrastructure. Wraps a FunctionObject.
	JScriptCodeProvider	Infrastructure. Provides access to instances of the JScript code generator and code compiler.
	JScriptException	Infrastructure. The exception that is thrown by JScript to notify a common language runtime (CLR) host or program that an error occurred. A JScriptException usually takes a JSError enumeration value.
	JSField	Infrastructure. Supports all fields in JScript. This is the base class for all fields that are defined by JScript. This class belongs to the name binding category.
	JSFieldInfo	Infrastructure. Wraps a FieldInfo object.
	JSFunctionAttribute	Infrastructure. Used with JSFunctionAttributeEnum to annotate the calling conventions of methods and constructors that are generated by the JScript compiler.
	JSLocalField	Infrastructure. Represents a local variable.
	JSMethod	Infrastructure. Represents a JScript method. This class belongs to the name binding category.
	JSMethodInfo	Infrastructure. Wraps a MethodInfo object.
	JSObject	Infrastructure. Represents an object in JScript. This class belongs to the objects and functions category.
	JSParser	Infrastructure. Parses JScript code. This class belongs to the scanning and parsing category. For more information about scanning and parsing, see Create a Language Compiler for the .NET Framework.
	JSPrototypeObject	Infrastructure. Adds a constructor function property to a JSObject for early binding purposes. This class belongs to the objects and functions category.
	JSScanner	Infrastructure. Scans JScript code searching for individual units of code, or tokens. This class belongs to the scanning and parsing category. For more information about scanning and parsing, see Create a Language Compiler for the .NET Framework.
	JSVariableField	Infrastructure. Supports variable fields in JScript. This is the base class for parameters, local variables, global variables, and class members.
	LateBinding	Infrastructure. Represents a reference to a class member, callable expression, or variable name. This class attempts to resolve the reference to the correct value at run time.
	LenientArrayPrototype	Infrastructure. Stores objects that represent the static methods of the ArrayPrototype class. The LenientArrayPrototype class belongs to the built-in object model category.
	LenientBooleanPrototype	Infrastructure. Stores objects that represent the static methods of the BooleanPrototype class. The LenientBooleanPrototype class belongs to the built-in object model category.
	LenientDateConstructor	Infrastructure. Stores objects that represent the static methods of the DateConstructor class. The LenientDateConstructor class belongs to the built-in object model category.
	LenientDatePrototype	Infrastructure. Stores objects that represent the static methods of the DatePrototype class. The LenientDatePrototype class belongs to the built-in object model category.
	LenientEnumeratorPrototype	Infrastructure. Stores objects that represent the static methods of the EnumeratorPrototype class. The LenientEnumeratorPrototype class belongs to the built-in object model category.
	LenientErrorPrototype	Infrastructure. Stores objects that represent the static methods of the ErrorPrototype class. The LenientErrorPrototype class belongs to the built-in object model category.
	LenientFunctionPrototype	Infrastructure. Stores objects that represent the static methods of the FunctionPrototype class. The LenientFunctionPrototype class belongs to the built-in object model category.
	LenientGlobalObject	Infrastructure. Stores constructor function objects, data type information, and objects that represent the static methods of the GlobalObject class. The LenientGlobalObject class belongs to the built-in object model category.
	LenientMathObject	Infrastructure. Stores objects that represent the static methods of the MathObject class. The LenientMathObject class belongs to the built-in object model category.
	LenientNumberPrototype	Infrastructure. Stores objects that represent the static methods of the NumberPrototype class. The LenientNumberPrototype class belongs to the built-in object model category.
	LenientObjectPrototype	Infrastructure. Stores objects that represent the static methods of the ObjectPrototype class. The LenientObjectPrototype class belongs to the built-in object model category.
	LenientRegExpPrototype	Infrastructure. Stores objects that represent the static methods of the RegExpPrototype class. The LenientRegExpPrototype class belongs to the built-in object model category.
	LenientStringConstructor	Infrastructure. Stores objects that represent the static methods of the StringConstructor class. The LenientStringConstructor class belongs to the built-in object model category.
	LenientStringPrototype	Infrastructure. Stores objects that represent the static methods of the StringPrototype class. The LenientStringPrototype class belongs to the built-in object model category.
	LenientVBArrayPrototype	Infrastructure. Stores objects that represent the static methods of the VBArrayPrototype class. The LenientVBArrayPrototype class belongs to the built-in object model category.
	MathObject	Infrastructure. Provides constants and static methods for trigonometric functions, logarithmic functions, and other common mathematical functions. This class belongs to the built-in object model category.
	MemberInfoList	Infrastructure. Maintains a list of MemberInfo elements.
	MethodInvoker	Infrastructure. Represents the invoker for a particular method. Used by the JSMethodInfo class to invoke methods.
	Missing	Infrastructure. Represents the value of a variable that has been instantiated but that has not yet had its value set.
	Namespace	Infrastructure. Represents a namespace.
	NoContextException	Infrastructure. The exception that is thrown when there is no code Context associated with a JScriptException.
	NotRecommended	Infrastructure. Indicates that a method or field is not recommended.
	NumberConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	NumberObject	Infrastructure. Represents a number object. This class belongs to the built-in object model category.
	NumberPrototype	Infrastructure. Provides static methods and properties for NumberObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	NumericBinary	Infrastructure. Performs binary operations on numeric operands. This class belongs to the abstract syntax tree category.
	NumericUnary	Infrastructure. Performs unary operations on numeric operands. This class belongs to the abstract syntax tree category.
	ObjectConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	ObjectPrototype	Infrastructure. Provides static methods and properties for JSObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	Override	Infrastructure. Indicates that a method or field overrides a method or field in a base class.
	Package	Infrastructure. Creates packages of JScript code for use by other code. This class belongs to the abstract syntax tree category.
	ParserException	Infrastructure. This class is used by the JScript parser to represent parser exceptions.
	Plus	Infrastructure. Performs addition and concatenation operations. This class belongs to the abstract syntax tree category.
	PostOrPrefixOperator	Infrastructure. Performs increment and decrement operations that correspond to the prefix and postfix syntax. This class belongs to the abstract syntax tree category.
	RangeErrorObject	Infrastructure. Represents a range error. For example, a range error can occur when you use an incorrect index to access an array element.
	ReferenceAttribute	Infrastructure. Represents a reference to an assembly.
	ReferenceErrorObject	Infrastructure. Represents a reference error. For example, a reference error can occur when you reference an undeclared variable.
	RegExpConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	RegExpMatch	Infrastructure. Represents the results from a regular expression match. This class belongs to the built-in object model category.
	RegExpObject	Infrastructure. Represents a regular expression object. This class belongs to the built-in object model category.
	RegExpPrototype	Infrastructure. Provides static methods and properties for RegExpObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	Relational	Infrastructure. Performs relational comparison operations. This class belongs to the abstract syntax tree category.
	ReturnOutOfFinally	Infrastructure. Represents the exception state when code execution returns out of a finally block.
	Runtime	Infrastructure. Provides utility functions.
	ScriptBlock	Infrastructure. Represents a block of JScript code. This class belongs to the abstract syntax tree category.
	ScriptFunction	Infrastructure. Represents a prototype-based object that is defined by a constructor function. Most of the constructor function classes, such as DateConstructor, NumberConstructor, StringConstructor, and ObjectConstructor, inherit from this class. This class belongs to the objects and functions category.
	ScriptObject	Infrastructure. Supports all JScript classes. This is the ultimate base class of all JScript classes. This class belongs to the objects and functions category.
	ScriptStream	Infrastructure. Represents a stream of data. This class sends its data to either a COMCharStream or a Console stream.
	SimpleHashtable	Infrastructure. A hash table for the internal storage of items.
	StackFrame	Infrastructure. Represents a stack frame for executing code. This class contains methods for resolving scope. It belongs to the compilation and run-time state category.
	StrictEquality	Infrastructure. Performs comparison operations. This class belongs to the abstract syntax tree category.
	StringConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	StringObject	Infrastructure. Represents a string object. This class belongs to the built-in object model category.
	StringPrototype	Infrastructure. Provides static methods and properties for StringObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	SuperTypeMembersSorter	Infrastructure. Stores members from base classes and interfaces.
	SyntaxErrorObject	Infrastructure. Represents a syntax error. For example, a syntax error can occur when you omit a semicolon.
	Throw	Infrastructure. Throws an exception. This class belongs to the abstract syntax tree category.
	Try	Infrastructure. Identifies blocks of code to run in error handling scopes. This class belongs to the abstract syntax tree category.
	TypedArray	Infrastructure. Represents a reflectable reference to the Array class. This class stores the element type of a typed array, but this class does not store data.
	TypeErrorObject	Infrastructure. Represents a type error. For example, a type error can occur when you pass an object of one type to a method that expects an object of another type.
	Typeof	Infrastructure. Determines the data types of objects. This class belongs to the abstract syntax tree category.
	TypeReflector	Infrastructure. Provides an implementation of GetMember that is faster than GetMember.
	UnaryOp	Infrastructure. Represents the base class for classes that perform operations on single operands, such as Typeof and PostOrPrefixOperator. This class belongs to the abstract syntax tree category.
	URIErrorObject	Infrastructure. Represents a Uniform Resource Identifier (URI) error. For example, a URI error can occur when you try to encode or decode a URI.
	VBArrayConstructor	Infrastructure. Represents a prototype-based object that is defined by a constructor function. This class belongs to the built-in object model category.
	VBArrayObject	Infrastructure. Represents a VBArray object. This class belongs to the built-in object model category.
	VBArrayPrototype	Infrastructure. Provides static methods and properties for VBArrayObject objects. All methods of this class are called by passing in a reference to the object that is requesting access to the method. This class belongs to the built-in object model category.
	VsaItem	Infrastructure. Represents items added to the .NET script engine. This includes code items, reference items, and global items.
	VsaItems	Infrastructure. Represents a collection of IVsaItem objects that can be addressed either by name or by index.
	With	Infrastructure. Represents the with statement. This class belongs to the abstract syntax tree category.

Interfaces

	Interface	Description
	COMMemberInfo	Infrastructure. Defines methods that enable JScript to communicate with an external COM member. This interface is used by an external COM implementation to expose its objects to JScript because JScript requires a managed MemberInfo to bind to an external object.
	IActivationObject	Infrastructure. Defines methods for resolving scope. This interface is implemented by all objects that take part in a scope hierarchy.
	IAuthorServices	Infrastructure. Defines services for authoring JScript code in an editor.
	IColorizeText	Infrastructure. Defines services for colorizing text when JScript code is being authored in an editor.
	IDebugConvert	Infrastructure. Defines a set of utility methods that convert data from one type to another. Includes methods that convert values to String objects so that they can be displayed by the debugger.
	IDebugConvert2	Infrastructure. Defines utility methods that convert data from one type to another. Includes methods that convert values to String objects so that they can be displayed by the debugger.
	IDebuggerObject	Infrastructure. Defines methods that provide information about debugger objects. This interface is implemented by all IReflect objects that are implemented by the debugger. Currently, this interface serves only to flag these objects as such to the scripting engine.
	IDebugScriptScope	Infrastructure. Defines methods that set the this value that is associated with the global scope. Used by the VsaEngine.
	IDebugType	Infrastructure. Defines methods that provide information about debugger objects. This interface is implemented by debugger objects that represent a type in the debugger target.
	IDebugVsaScriptCodeItem	Infrastructure. Defines methods that evaluate expressions and parse strings. This interface is typically implemented by an object that represents a code block, and it is typically called by a debugger. This interface provides extra functionality that is needed by an IActiveScript host.
	IDefineEvent	Infrastructure. Defines extra functionality that is needed by an active script host.
	IEngine2	Infrastructure. Defines extra functionality that is needed by an IActiveScript host. Implemented by the VsaEngine engine.
	IErrorHandler	Infrastructure. Defines methods to handle errors that occur when code is being parsed.
	IMessageReceiver	Infrastructure. Defines methods that receive output from a scripting engine. This interface acts as a callback object to capture output that would otherwise go to the console.
	IMethodsCompletionInfo	Infrastructure. This is a marker interface and has no methods.
	INeedEngine	Infrastructure. Defines methods that get and set references to the scripting engine.
	IObjectCompletionInfo	Infrastructure. This is a marker interface and has no methods.
	IParseText	Infrastructure. Defines methods for parsing text when JScript code is being authored in an editor.
	IRedirectOutput	Infrastructure. Defines methods that capture output that would otherwise go to the console. This interface is implemented by the VsaEngine.
	ISite2	Infrastructure. Defines methods that are used by the VsaEngine for name resolution. Provides extra functionality that is needed by an IActiveScript host.
	ITokenColorInfo	Infrastructure. Defines properties for coloring specific units of code.
	ITokenEnumerator	Infrastructure. Defines methods for iterating over a collection of ITokenColorInfo objects.
	IVsaFullErrorInfo	Infrastructure. Defines properties to obtain information about errors. This interface provides extra functionality that is needed by an IActiveScript host.
	IVsaScriptCodeItem	Infrastructure. Defines extra functionality that is needed by an IActiveScript host.
	IVsaScriptScope	Infrastructure. Defines methods for resolving scope. The global scope object of the VsaEngine implements this interface.
	IWrappedMember	Infrastructure. Defines methods for accessing the object that a member is defined on.
	MemberInfoInitializer	Infrastructure. Defines methods that an external COM object must implement. This interface is used by an external COM implementation to expose its objects to JScript because JScript needs a managed MemberInfo to bind to an external object. This interface is implemented by COMFieldInfo, COMMethodInfo, and COMPropertyInfo.

Enumerations

	Enumeration	Description
	CmdLineError	Infrastructure. Specifies errors that occur when you run the command-line compiler jsc.exe. This enumeration is used to create CmdLineException objects.
	ErrorType	Infrastructure. Specifies the JScript error types.
	JSBuiltin	Infrastructure. Specifies the built-in JScript functions. These functions correspond to the static methods of the intrinsic JScript objects. The members of this enumeration are used to create JSFunctionAttribute objects.
	JSError	Infrastructure. Specifies the JScript error messages. This class belongs to the compilation and run-time state category.
	JSFunctionAttributeEnum	Infrastructure. Specifies the calling conventions of functions that are generated by the JScript compiler. Used with the JSFunctionAttribute custom attribute.
	JSToken	Infrastructure. Specifies the individual units of code, or tokens, that make up the JScript language.
	SourceState	Infrastructure. Specifies the state of source code text. This class is used together with other classes that provide information to color JScript code in an editor.
	TokenColor	Infrastructure. Specifies the colors that individual units of code should have when text is being colorized in an editor. The members of this enumeration are used by the Color property of ITokenColorInfo objects.
	VSAITEMTYPE2	Infrastructure. Extends the VsaItemType enumeration. Provides extra functionality that is needed by an IActiveScript host.

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