Regular expression range 1 25

Question

Hello can someone help me creating a regex for numeric range from 1 to 25, I wouldn't like 01 02 etc just 1 2 3 .... Thanks
My failed attempt /^([1-2]{1,2}[0-9])$/

Answer 1

This is the "simple to understand" way

/^([1-9]|1[0-9]|2[0-5])$/

Breakdown:-

• |: or operator
• [1-9]: match 1 to 9
• 1[0-9]: match 10 to 19
• 2[0-5]: match 20 to 25