Floating-point

Numbers only

Minimum number of digits

Range of digits

Specific number of digits only

0 and numbers not begin with 0

^(0|[1-9][0-9]*)$

Numbers not begin with 0 and maximum 2 decimals

^([1-9][0-9]*)+(.[0-9]{1,2})?$

Positive or Negative numbers with maximum 2 decimals

^(\-)?\d+(\.\d{1,2})?$

Positive, Negative numbers and any decimal length

^(\-|\+)?\d+(\.\d+)?$

Numbers with maximum 2 decimals

^[0-9]+(.[0-9]{2})?$

Numbers with 1-5 decimals

^[0-9]+(.[0-9]{1,5})?$

Positive Integer, excluding 0

^[1-9]\d*$

or

^([1-9][0-9]*){1,3}$

or

^\+?[1-9][0-9]*$

Negative Integer, excluding 0

^-[1-9]\d*$

or

^\-[1-9][0-9]*$

Positive Integer

^\d+$

or

^[1-9]\d*|0$

Negative Integer

^-[1-9]\d*|0$

or

^((-\d+)|(0+))$