(turn) Regular expression Daquan

First, the numeric check expression

1. Number: ^[0-9]*$

2. Number of n digits: ^d{n}$

3. Number of at least n digits: ^d{n,}$

4. Number of m-n digits: ^d{m,n}$

5. Numbers starting with 0 and non 0: ^ (0|[ 1-9][0-9]*) $

6. A number with a maximum of two decimal places not starting with 0: ^ ([1-9][0-9]*) + (. [ 0-9]{1,2})? $

7. Positive or negative numbers with 1-2 decimal places: ^ (-)? d+ (. d{1,2})? $

8. Positive, negative, and fractional: ^ (-|+)? d+ (. d+)? $

9. Positive real numbers with two decimal places: ^[0-9]+ (. [ 0-9]{2})? $

10. Positive real numbers with a decimal position: ^[0-9]+ (. [ 0-9]{1,3})? $

11. A positive integer other than 0: ^[1-9]d*$ or ^ ([1-9][0-9]*) {1,3}$ or ^+? [1-9] [0-9]*$

12. Negative integer not 0: ^-[1-9][]0-9 "*$ or ^-[1-9]d*$

13. Non-negative integers: ^d+$ or ^[1-9]d*|0$

14. Non-positive integers: ^-[1-9]d*|0$ or ^ ((-d+) | ( 0+)) $

15. Non-negative floating point number: ^d+ (. d+)? $ or ^[1-9]d*.d*|0.d*[1-9]d*|0?. 0+|0$

16. Non-positive floating-point number: ^ ((-d+ (. d+)?) | (0+ (. 0+)?)) $ or ^ (-([1-9]d*.d*|0.d*[1-9]d*)) | 0+|0$

17. Positive floating-point number: ^[1-9]d*.d*|0.d*[1-9]d*$ or ^ ([0-9]+.[ 0-9]*[1-9][0-9]*) | ([0-9]*[1-9][0-9]*. [0-9]+) | ([0-9]*[1-9][0-9]*)) $

18. Negative floating point number: ^-([1-9]d*.d*|0.d*[1-9]d*) $ or ^ (-([0-9]+.[ 0-9]*[1-9][0-9]*) | ([0-9]*[1-9][0-9]*. [0-9]+) | ([0-9]*[1-9][0-9]*))) $

19. Floating-point number: ^ (-?d+) (. d+)? $ or ^-? ([1-9]d*.d*|0.d*[1-9]d*|0?. 0+|0) $

Second, character check expression

1. Kanji: ^[u4e00-u9fa5]{0,}$

2. English and numerals: ^[a-za-z0-9]+$ or ^[a-za-z0-9]{4,40}$

3. All characters with a length of 3-20: ^. {3,20}$

4. A string consisting of 26 English letters: ^[a-za-z]+$

5. A string consisting of 26 lowercase/uppercase English letters: ^[a-z]+$ ^[a-z]+$

6. A string consisting of a number and 26 English letters: ^[a-za-z0-9]+$

7. A string consisting of numbers, 26 letters, or underscores: ^w+$ or ^w{3,20}$

8. Chinese, English, numerals include underline: ^[u4e00-u9fa5a-za-z0-9_]+$

9. Chinese, English, numerals but not including underline symbols: ^[u4e00-u9fa5a-za-z0-9]+$ or ^[u4e00-u9fa5a-za-z0-9]{2,20}$

10. Can input containing can input containing ^%& ',; =?$ "and other characters:[^%& ',; =? $x 22]+

11. Prohibit input of characters containing ~: [^~x22]+

Iii. Expression of special needs

1. Email Address: ^w+ ([-+.] w+) *@w+ ([-.] w+) *.w+ ([-.] w+) *$

2. Domain name: [a-za-z0-9][-a-za-z0-9]{0,62} (/.[ A-ZA-Z0-9][-A-ZA-Z0-9]{0,62}) +/.?

3. InternetURL: [a-za-z]+://[^s]* or ^http://([w-]+.) +[w-]+ (/[w-./?%&=]*)? $

4. Mobile Number: ^ (13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8| 9]|18[0|1|2|3|5|6|7|8| 9]) d{8}$

5. Telephone numbers ("Xxx-xxxxxxx", "xxxx-xxxxxxxx", "xxx-xxxxxxx", "xxx-xxxxxxxx", "XXXXXXX", and "XXXXXXXX"): ^ ((d{3,4}-) |d{3.4}-)? d{ 7,8}$

6. Domestic phone number: D{3}-d{8}|d{4}-d{7}

7. ID Number: ^d{15}|d{18}$

Article excerpt from:http://www.kuqin.com/shuoit/20151215/349463.html

(turn) Regular expression Daquan