Overview

suggest change

Unary operators are operators with only one operand. Unary operators are more efficient than standard JavaScript function calls. Additionally, unary operators can not be overridden and therefore their functionality is guaranteed.

The following unary operators are available:

Operator	Operation	Example
delete	The delete operator deletes a property from an object.	example
void	The void operator discards an expression’s return value.	example
typeof	The typeof operator determines the type of a given object.	example
+	The unary plus operator converts its operand to Number type.	example
-	The unary negation operator converts its operand to Number, then negates it.	example
~	Bitwise NOT operator.	example
!	Logical NOT operator.	example

Found a mistake? Have a question or improvement idea? Let me know.

Table Of Contents