Unary negation (-)

The unary negation operator (-) precedes its operand and negates it.

语法

Operator: -x

Examples

Negating numbers

const x = 3;
const y = -x;

// y = -3
// x = 3

Negating non-numbers

The unary negation operator can convert a non-number into a number.

const x = "4";
const y = -x;

// y = -4

Specifications

Browser compatibility

See also

• Addition operator
• Subtraction operator
• Division operator
• Multiplication operator
• Remainder operator
• Exponentiation operator
• Increment operator
• Decrement operator
• Unary plus operator