Summary of commonly used regular expressions in JS_javascript skills

Copy code The code is as follows:

Verify the regularity of numbers Expression set

Verification number: ^[0-9]*$

Verify n-digit number: ^d{n}$

Verify that there are at least n digits: ^d{n,}$

Verify m-n digit number: ^d{m,n}$

Verify numbers starting with zero and non-zero: ^(0|[1-9][0-9]*)$

Verify a positive real number with two decimal places: ^[0-9] (.[0-9]{2})?$

Verify positive real numbers with 1-3 decimal places: ^[0-9] (.[0-9]{1,3})?$

Verify non-zero positive integers: ^ ?[1-9][0-9]*$

Verify non-zero negative integers: ^-[1-9][0-9]*$

Verify non-negative integer (positive integer 0) ^d $

Verify non-positive integer (negative integer 0) ^((-d )|(0 ))$

Verify characters of length 3: ^.{3}$

Verify a string of 26 English letters: ^[A-Za-z] $

Verify a string of 26 uppercase English letters: ^[A-Z] $

Verify a string consisting of 26 lowercase English letters: ^[a-z] $

Verify a string consisting of numbers and 26 English letters: ^[A-Za-z0-9] $

Verify a string consisting of numbers, 26 English letters, or underscores: ^w $

Verify user password: ^[a-zA-Z]w{5,17}$ The correct format is: starting with a letter, the length is between 6-18, and can only contain characters, numbers and underscores.

Verify whether it contains characters such as ^%&',;=?$": [^%&',;=?$x22]

Verify Chinese characters: ^[u4e00-u9fa5],{0,}$

Verify email address: ^w [- .]w )*@w ([-.]w )*.w ([-.]w )*$

Verify InternetURL: ^http://([w-] .) [w-] (/[w-./?%&=]*)?$ ; ^[a-zA-z] :// (w (-w )*)(.(w (-w )*))*(?S*)?$

Verification phone number: ^((d{3,4})|d{3,4}-)?d{7,8}$:--The correct format is: XXXX-XXXXXXX, XXXX-XXXXXXXX, XXX -XXXXXXX, XXX-XXXXXXXX, XXXXXXX, XXXXXXXX.

Verify ID number (15 or 18 digits): ^d{15}|d{}18$

Verify the 12 months of a year: ^(0?[1-9]|1[0-2])$ The correct format is: "01"-"09" and "1" "12"

Verify the 31 days of a month: ^((0?[1-9])|((1|2)[0-9])|30|31)$ The correct format is: 01, 09 and 1, 31.

Integer: ^-?d $

Non-negative floating point number (positive floating point number 0): ^d (.d )?$

Positive floating point number^(([0-9] .[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9 ]*.[0-9] )|([0-9]*[1-9][0-9]*))$

Non-positive floating point number (negative floating point number 0) ^((-d (.d )?)|(0 (.0 )?))$

Negative floating point number ^(-(([0-9] .[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0 -9]*.[0-9] )|([0-9]*[1-9][0-9]*)))$

Floating point number ^(-?d )(.d )?$