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
note: 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)
| 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. |