Integer or decimal: ^[0-9]+. {0,1} [0-9] {0,2}$ can only enter a number: "^[0-9]*$". Only n digits can be entered: "^\d{n}$". Only numbers with at least n digits can be entered: "^\d{n,}$". You can enter only the digits of the m~n bit:. "^\d{m,n}$" can only enter numbers starting with 0 and non-0: "^ (0|[ 1-9][0-9]*) $ ". You can only enter a positive real number with two decimal places: "^[0-9]+ (. [ 0-9]{2})? $ ". You can only enter a positive real number with a decimal position: "^[0-9]+ (. [ 0-9]{1,3})? $ ". You can only enter a non-zero positive integer: "^+?" [1-9] [0-9]*$]. You can only enter a non-zero negative integer: "^-[1-9][]0-9" *$. Only characters with a length of 3 can be entered: "^. {3}$ ". You can only enter a string consisting of 26 English letters: "^[a-za-z]+$". You can only enter a string consisting of 26 uppercase English letters: "^[a-z]+$". You can only enter a string consisting of 26 lowercase English letters: "^[a-z]+$". You can only enter a string consisting of a number and 26 English letters: "^[a-za-z0-9]+$". You can only enter a string consisting of a number, 26 letters, or underscores: "^\w+$". Verify user password: "^[a-za-z]\w{5,17}$" is in the correct format: start with a letter, length between 6~18, can contain only characters, numbers, and underscores. Verify that it contains ^%& ',; =?$\ ' characters: "[^%& ',; =?$\x22]+". Only Chinese characters can be entered: "^[\u4e00-\u9fa5]{0,}$" Verify email Address: "^\w+ ([-+.] \w+)
@\w+ ([-.] \w+). \w+ ([-.] \w+) *$ ". Verify InternetURL: "^http://([\w-]+.) +[\w-]+ (/[\w-./?%&=]*)? $ ". Verify the phone number: "^ ((\d{3,4}-) |\d{3.4}-)? \d{7,8}$" The correct format is: "Xxx-xxxxxxx", "xxxx-xxxxxxxx", "xxx-xxxxxxx", "xxx-xxxxxxxx", " XXXXXXX "and" XXXXXXXX ". Verify the Social Security number (15-bit or 18-digit number): "^\d{15}|\d{18}$". Validation 12 months of the year: "^ (0?[ 1-9]|1[0-2]) $ "The correct format is:" 01 "~" 09 "and" 1 "~" 12 ". Verify one months of 31 days: "^ ((0?[ 1-9]) | ((1|2) [0-9]) |30|31) $ "correct format # #为;" 01 "~" 09 "and" 1 "~" 31 ". Regular expressions that match Chinese characters: [\U4E00-\U9FA5]
Common Regular Expressions
