Expression Operators

Use operators to join expressions together to create compound expressions.

Operators must be used within Visualforce expression syntax to be evaluated.Visualforce supports the following operators.

Math Operators

Operator	Description	Use
`+`	Calculates the sum of two values.	`value1 + value2` and replace each value with merge fields, expressions, or other numeric values.
`-`	Calculates the difference of two values.	`value1 - value2` and replace each value with merge fields, expressions, or other numeric values.
`*`	Multiplies its values.	`value1 * value2` and replace each value with merge fields, expressions, or other numeric values.
`/`	Divides its values.	`value1 / value2` and replace each value with merge fields, expressions, or other numeric values.
`^`	Raises a number to a power of a specified number.	number^integer and replace number with a merge field, expression, or another numeric value; replace integer with a merge field that contains an integer, expression, or any integer.
`()`	Specifies that the expressions within the open parenthesis and close parenthesis are evaluated first. All other expressions are evaluated using standard operator precedence.	(expression1) expression2… and replace each expression with merge fields, expressions, or other numeric values.

Logical Operators

You can’t have a relative comparison expression that includes a null value. Doing so results in an exception. Specifically, you can’t have a null value on either side of the following operators:

< (less than)
<= (less than or equals)
> (greater than)
>= (greater than or equals)

Note

Operator	Description	Use
`=` and `==`	Evaluates if two values are equivalent. The = and == operators are interchangeable.	expression1=expression2 or expression1 == expression2, and replace each expression with merge fields, expressions, or other numeric values.
`<>` and `!=`	Evaluates if two values aren’t equivalent.	expression1 <> expression2 or expression1 != expression2, and replace each `expression` with merge fields, expressions, or other numeric values.
`<`	Evaluates if a value is less than the value that follows this symbol.	value1 < value2 and replace each `value` with merge fields, expressions, or other numeric values.
`>`	Evaluates if a value is greater than the value that follows this symbol.	value1 > value2 and replace each value with merge fields, expressions, or other numeric values.
`<=`	Evaluates if a value is less than or equal to the value that follows this symbol.	value1 <= value2 and replace each `value` with merge fields, expressions, or other numeric values.
`>=`	Evaluates if a value is greater than or equal to the value that follows this symbol.	value1 >= value2 and replace each `value` with merge fields, expressions, or other numeric values.
`&&`	Evaluates if two values or expressions are both true. Use this operator as an alternative to the logical function AND.	`(logical1) && (logical2)` and replace logical1 and logical2 with the values or expressions that you want evaluated.
`\|\|`	Evaluates if at least one of multiple values or expressions is true. Use this operator as an alternative to the logical function OR.	`(logical1) \|\| (logical2)` and replace any number of logical references with the values or expressions you want evaluated.

Text Operators

Operator	Description	Use
`&`	Connects two or more strings.	string1&string2 and replace each string with merge fields, expressions, or other values.