JavaScript "Regular expression validation numeric code"

<script type="Text/javascript ">     functionValidate () {var reg= New RegExp ("^[0-9]*$ ");var obj = document.getElementById ("name ");if (!reg.test (Obj.value)) {alert ("Please enter a number! ");} if (!/^[0-9]*$/. Test (Obj.value)) {Alert ("Please enter a number! ");    }  }</script>verify number of regular expression set validation numbers:^[0-9]*$ to verify N-bit numbers:^\d{n}$ Verify that at least n digits:^\d{n,}$ Verification MNumber of-N digits: ^\d{m,n}$ Verify the numbers starting with 0 and non 0:^(0| [1-9][0-9]*) $ verifies that there is a positive real number with two decimal places:^[0-9]+(. [0-9]{2})? $ verify there are 1-Positive real number of 3 decimal places: ^[0-9]+(. [0-9]{1,3})? $ verify non-zero positive integers:^\+? [1-9][0-9]*$ to verify a nonzero negative integer:^\-[1-9][0-9]*$ Verify non-negative integer (positive integer+0) ^\d+$ validates a non-positive integer (negative integer+0) ^ ((-\d+) | (0+) $ to verify the character length 3:^. {3}$ validates a string consisting of 26 English letters:^[a-za-z]+$ validates a string consisting of 26 uppercase English letters:^[a-z]+$ validates a string consisting of 26 lowercase English letters:^[a-z]+$ validates a string consisting of a number and 26 English letters:^[a-za-z0-9]+$ validates a string consisting of a number, 26 letters, or underscores:^\w+$ Verify User password:^[a-za-z]\w{5, -}$ the correct format is: Start with a letter, length in 6-18, only characters, numbers, and underscores can be included. Verify that you contain^%&',; =?$\ "and other characters:[^%&',; =?$\x22]+Verify Kanji:^[\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*)? $ verify 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 your Social Security number (15-bit or 18-digit number):^\d{ the}|\d{} -$12 months of the year of validation:^(0? [1-9]|1[0-2]) $ in the correct format for: " on”-“ theand1”“ A"Verify one months of 31 days:^((0? [1-9])| ((1|2)[0-9])| -| to) $ correct format for: on, 09 and 1, to. 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+)? $

JavaScript "Regular expression validation numeric code"