Only numbers can be entered: "^[0-9]*$".
Only n digits can be entered: "^d{n}$".
You can enter at least n digits: "^d{n,}$".
You can enter only the number of m~n digits:. "^d{m,n}$"
Only numbers beginning with 0 and not 0 can be entered: ^ (0|[ 1-9][0-9]*) $ ".
You can only enter positive real numbers with two decimal digits: ^[0-9]+ (. [ 0-9]{2})? $ ".
You can only enter positive real numbers with 1~3 decimal places: ^[0-9]+ (. [ 0-9]{1,3})? $ ".
You can only enter a Non-zero positive integer: "^+?" [1-9] [0-9]*$].
You can only enter a Non-zero negative integer: "^-[1-9][]0-9" *$.
You can only enter characters with a length of 3: "^. {3}$ ".
You can only enter a string of 26 English letters: "^[a-za-z]+$".
You can only enter a string consisting of 26 uppercase letters: "^[a-z]+$".
You can only enter a string consisting of 26 lowercase English letters: "^[a-z]+$".
You can only enter a string consisting of numbers and 26 English letters: "^[a-za-z0-9]+$".
You can only enter a string of numbers, 26 English letters, or underscores: "^w+$".
Verify user password: "^[a-za-z]w{5,17}$" is the correct format: start with a letter, length between 6~18, can only contain characters, numbers, and underscores.
Verify that there are ^%& ',; =?$ ' characters: "[^%&",; = $x 22]+ ".
Only Chinese characters can be entered: "^[u4e00-u9fa5]{0,}$".
Verify email Address: "^w+ ([-+.] w+) *@w+ ([-.] w+) *.w+ ([-.] w+) *$ ".
Verify InternetURL: "^http://([w-]+.) +[w-]+ (/[w-./?%&=]*)? $ ".
Verify phone Number: "^ ((d{3,4}-) |d{3.4}-)? d{7,8}$" The correct format is: "Xxx-xxxxxxx", "xxxx-xxxxxxxx", "xxx-xxxxxxx", "xxx-xxxxxxxx", "XXXXXXX" "and" XXXXXXXX ".
Verify ID Number (15-bit or 18-digit): "^d{15}|d{18}$".
Verify 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) $ "the correct format is;" 01 "~" 09 "and" 1 "~" 31 ".
Use regular expressions to restrict the entry of text boxes in a Web page's form:
The regular expression limit can only be entered in Chinese: onkeyup= "value=value.replace (/[^u4e00-u9fa5]/g,") "Onbeforepaste=" Clipboarddata.setdata (' text ', Clipboarddata.getdata (' text '). Replace (/[^u4e00-u9fa5]/g, ') "
Only full-width characters can be entered with regular expression restrictions: onkeyup= "Value=value.replace (/[^uff00-uffff]/g,") "Onbeforepaste=" Clipboarddata.setdata (' Text ', Clipboarddata.getdata (' text '). Replace (/[^uff00-uffff]/g, ') "
Only numbers can be entered with regular expression restrictions: onkeyup= "Value=value.replace (/[^d]/g,") "Onbeforepaste=" Clipboarddata.setdata (' text ', Clipboarddata.getdata (' text '). Replace (/[^d]/g, ') "
Only numbers and English can be entered with regular expression restrictions: onkeyup= "Value=value.replace" (/[w]/g,