getSign

Returns the sign of a number.

Parameters

• value (number): The number to evaluate.

Returns

• string | number:
  • 'positive' if the number is greater than 0.
  • 'negative' if the number is less than 0.
  • 'zero' if the number is exactly 0.
  • NaN if the input is not a valid number.

Usage

getSign(10); 
// 'positive'

getSign(-5); 
// 'negative'

getSign(0); 
// 'zero'