JS regular expression verification numeric code_javascript skills
Verify the regularity of numbers Expression set
Verify numbers: ^[0-9]*$
Verify n-digit numbers: ^d{n}$
Verify at least n-digit numbers: ^d{ n,}$
Verify numbers with m-n digits: ^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 a positive real number 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 a string of length 3: ^.{3}$
Verify a string of 26 English letters: ^[A-Za-z] $
Verify a string of 26 uppercase letters A string consisting of 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.
Verification ID number (15 or 18 digits): ^d{15}|d{}18. $
Verify the 12 months of the 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 )?$

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