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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 (+=)
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Adds two numbers or concatenates two strings, and assigns the result to the first argument.
- Addition Operator (+)
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Adds two numbers or concatenates two strings.
- Assignment Operator (=)
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Assigns a value to a variable.
- Bitwise AND Assignment Operator (&=)
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Performs a bitwise AND on two expressions, and assigns the result to the first argument.
- Bitwise AND Operator (&)
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Performs a bitwise AND on two expressions.
- Bitwise Left Shift Operator (<<)
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Shifts the bits of an expression to the left.
- Bitwise NOT Operator (~)
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Performs a bitwise NOT (negation) on an expression.
- Bitwise OR Assignment Operator (|=)
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Performs a bitwise OR on two expressions, and assigns the result to the first argument.
- Bitwise OR Operator (|)
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Performs a bitwise OR on two expressions.
- Bitwise Right Shift Operator (>>)
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Shifts the bits of an expression to the right, maintaining sign.
- Bitwise XOR Assignment Operator (^=)
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Performs a bitwise exclusive OR on two expressions, and assigns the result to the first argument.
- Bitwise XOR Operator (^)
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Performs a bitwise exclusive OR on two expressions.
- Comma Operator (,)
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Causes two expressions to be executed sequentially.
- Comparison Operators
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An assortment of operators (==, >, >=, ===, !=, <, <=, !==) that return a Boolean value indicating the result of a comparison
- Conditional (Ternary) Operator (?:)
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Chooses one of two statements to run depending on a condition.
- delete Operator
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Deletes a property from an object, or removes an element from an array.
- Division Assignment Operator (/=)
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Divides two numbers, returns a numeric result, and assigns the result to the first argument.
- Division Operator (/)
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Divides two numbers and returns a numeric result.
- in Operator
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Tests for the existence of a property in an object.
- Increment (++) and Decrement (--) Operators
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Increment operator (++) increments a variable by one; decrement operator (--) decrements a variable by one.
- instanceof Operator
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Returns a Boolean value that indicates whether or not an object is an instance of a particular class.
- Left Shift Assignment Operator (<<=)
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Shifts the bits of an expression to the left, and assigns the result to the first argument.
- Logical AND Operator (&&)
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Performs a logical conjunction on two expressions.
- Logical NOT Operator (!)
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Performs logical negation on an expression.
- Logical OR Operator (||)
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Performs a logical disjunction on two expressions.
- Modulus Assignment Operator (%=)
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Divides two numbers and assigns the remainder to the first argument.
- Modulus Operator (%)
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Divides two numbers and returns the remainder.
- Multiplication Assignment Operator (*=)
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Multiplies two numbers and assigns the result to the first argument.
- Multiplication Operator (*)
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Multiplies two numbers.
- new Operator
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Creates a new object.
- Reference Operator (&)
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Allows passing references to variables to methods with reference or out parameters.
- Right Shift Assignment Operator (>>=)
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Shifts the bits of an expression to the right, maintaining sign, and assigns the result to the first argument.
- Subtraction Assignment Operator (-=)
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Subtracts one number from another and assigns the result to the first argument.
- Subtraction Operator (-)
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Indicates the negative value of a numeric expression or subtracts one number from another.
- typeof Operator
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Returns a string that identifies the data type of an expression.
- Unsigned Right Shift Assignment Operator (>>>=)
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Performs an unsigned right shift of the bits in an expression and assigns the result to the first argument.
- Unsigned Right Shift Operator (>>>)
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Performs an unsigned right shift of the bits in an expression.
- void Operator
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Prevents an expression from returning a value.
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