Operators (JScript) 

JScript includes a number of operators that fall into the arithmetic, logical, bitwise, assignment, and miscellaneous categories. The following sections link to information that explains how to use the operators.

In This Section

• Addition Assignment Operator (+=)
  Adds two numbers or concatenates two strings, and assigns the result to the first argument.

• Addition Operator (+)
  Adds two numbers or concatenates two strings.

• Assignment Operator (=)
  Assigns a value to a variable.

• Bitwise AND Assignment Operator (&=)
  Performs a bitwise AND on two expressions, and assigns the result to the first argument.

• Bitwise AND Operator (&)
  Performs a bitwise AND on two expressions.

• Bitwise Left Shift Operator (<<)
  Shifts the bits of an expression to the left.

• Bitwise NOT Operator (~)
  Performs a bitwise NOT (negation) on an expression.

• Bitwise OR Assignment Operator (|=)
  Performs a bitwise OR on two expressions, and assigns the result to the first argument.

• Bitwise OR Operator (|)
  Performs a bitwise OR on two expressions.

• Bitwise Right Shift Operator (>>)
  Shifts the bits of an expression to the right, maintaining sign.

• Bitwise XOR Assignment Operator (^=)
  Performs a bitwise exclusive OR on two expressions, and assigns the result to the first argument.

• Bitwise XOR Operator (^)
  Performs a bitwise exclusive OR on two expressions.

• Comma Operator (,)
  Causes two expressions to be executed sequentially.

• Comparison Operators
  An assortment of operators (==, >, >=, ===, !=, <, <=, !==) that return a Boolean value indicating the result of a comparison

• Conditional (Ternary) Operator (?:)
  Chooses one of two statements to run depending on a condition.

• delete Operator
  Deletes a property from an object, or removes an element from an array.

• Division Assignment Operator (/=)
  Divides two numbers, returns a numeric result, and assigns the result to the first argument.

• Division Operator (/)
  Divides two numbers and returns a numeric result.

• in Operator
  Tests for the existence of a property in an object.

• Increment (++) and Decrement (--) Operators
  Increment operator (++) increments a variable by one; decrement operator (--) decrements a variable by one.

• instanceof Operator
  Returns a Boolean value that indicates whether or not an object is an instance of a particular class.

• Left Shift Assignment Operator (<<=)
  Shifts the bits of an expression to the left, and assigns the result to the first argument.

• Logical AND Operator (&&)
  Performs a logical conjunction on two expressions.

• Logical NOT Operator (!)
  Performs logical negation on an expression.

• Logical OR Operator (||)
  Performs a logical disjunction on two expressions.

• Modulus Assignment Operator (%=)
  Divides two numbers and assigns the remainder to the first argument.

• Modulus Operator (%)
  Divides two numbers and returns the remainder.

• Multiplication Assignment Operator (*=)
  Multiplies two numbers and assigns the result to the first argument.

• Multiplication Operator (*)
  Multiplies two numbers.

• new Operator
  Creates a new object.

• Reference Operator (&)
  Allows passing references to variables to methods with reference or out parameters.

• Right Shift Assignment Operator (>>=)
  Shifts the bits of an expression to the right, maintaining sign, and assigns the result to the first argument.

• Subtraction Assignment Operator (-=)
  Subtracts one number from another and assigns the result to the first argument.

• Subtraction Operator (-)
  Indicates the negative value of a numeric expression or subtracts one number from another.

• typeof Operator
  Returns a string that identifies the data type of an expression.

• Unsigned Right Shift Assignment Operator (>>>=)
  Performs an unsigned right shift of the bits in an expression and assigns the result to the first argument.

• Unsigned Right Shift Operator (>>>)
  Performs an unsigned right shift of the bits in an expression.

• void Operator
  Prevents an expression from returning a value.

Related Sections

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

• JScript Operators
  Provides a conceptual overview of operators used in JScript and links to topics that explain the proper syntax for each operator and the significance of operator precedence.

• Operator Precedence
  Provides a list containing information about the execution precedence of JScript operators.

• Operator Summary
  Lists JScript operators and links to topics that explain their proper use.