Regular Expression for minimum value 18 and maximum 99 with leading zero. Means my number should be from 18 to 99. With one condition of leading zero i.e 18 == 018, 99 == 099

Regular Expression for minimum value 18 and maximum 99 with leading zero. Means my number should be from 18 to 99. With one condition of leading zero i.e 18 == 018, 99 == 099

• javascript
• angularjs
• regex
• ng-pattern

• 2 what is your expectation from stackoverflow? – brk Commented May 13, 2017 at 6:24
• 1 if (v> 17 && v < 100) ? – Mykola Borysyuk Commented May 13, 2017 at 6:24
• I need regular expression for the above question. – Himanshu Shekhar Commented May 13, 2017 at 6:26
• 1 If your allowable values are 18-99, how does a leading zero fit in to this? – AndrewR Commented May 13, 2017 at 6:27
• @Mykola Borysyuk I want this (v> 17 && v < 100) condition in regex. – Himanshu Shekhar Commented May 13, 2017 at 6:28

5 Answers 5

Try this it will help you

Less than 18 and greater than 99 is not allowed

^(1[89]|[2-9][0-9])$

^0?1[89]|0?[2-9][0-9]$

• ^ - beginning of string
• 0? - allow beginning 0
• 1[89] - match first character 1 and second 8 or 9
• | - or
• 0? - allow beginning 0
• [2-9] - match first character 2-9
• [0-9] - match second character 0-9
• $ - end of string

Try this:-

^0?(1[89]|[2-9]\d)$

Demo: https://regex101./r/CrcbHN/1

(01[89])|(0[2-9]\d)

• (01[89]) matches 018 to 019
• (0[2-9]\d) matches 020 to 099

Try with below,

0([1][89]|[2-9][0-9])

DEMO