Useful Regex - xgbn/handbook GitHub Wiki

Regular expression examples for

Decimals input

• Positive Integers ^\d+$

• Negative Integers ^-\d+$

• Integer ^-?\d+$

• Positive Number ^\d*.?\d+$

• Negative Number ^-\d*.?\d+$

• Positive Number or Negative Number ^-?\d*.?\d+$

• Phone number ^+?[\d\s]{3,}$

• Phone with code ^+?[\d\s]+(?[\d\s]{10,}$

• Year 1900-2099 ^(19|20)\d{2}$

• Date (dd mm yyyy, d/m/yyyy, etc.) ^([1-9]|0[1-9]|[12][0-9]|3[01])\D([1-9]|0[1-9]|1[012])\D(19[0-9][0-9]|20[0-9][0-9])$

• IP v4:

  ^(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]).(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]){3}$ Alphabetic input

• Personal Name ^[\w.']{2,}(\s[\w.']{2,})+$

• Username ^[\w\d_.]{4,}$

• Password at least 6 symbols ^.{6,}$

• Password or empty input ^.{6,}$|^$

• email ^[]*([a-z0-9]+(.|)?)+@([a-z][a-z0-9-]+(.|-.))+[a-z]{2,6}$

• domain ^([a-z][a-z0-9-]+(.|-*.))+[a-z]{2,6}$

Other regular expressions - Match no input ^$ - Match blank input ^\s\t*$ - Match New line [\r\n]|$ - Match white Space ^\s+$ - Match Url = ^http://[a-zA-Z0-9.-]+.[a-zA-Z]{2,3}$