"JavaScript" JavaScript common regular expression instances

JavaScript Common Regular Expression instances

Instance Source

1 varMyregexp = {2     //Check if the string is a legitimate QQ number3ISQQ:function(str) {4         //1 First position cannot be 0 ^[1-9]5         //2 must be a number of [5, 11] bits \d{4, 9}6         varReg =/^[1-9][0-9]{4,9}$/Gim;7         if(Reg.test (str)) {8Console.log (' QQ number format input correct '));9             return true;Ten}Else { OneConsole.log (' Please enter the correct format of the QQ number '); A             return false; -         } -     }, the     //Check if the string is a legitimate phone number -Isphone:function(str) { -         varReg =/^ (0|86|17951)? (13[0-9]|15[012356789]|18[0-9]|14[57]|17[678]) [0-9] {8}$/; -         if(Reg.test (str)) { +Console.log (' mobile phone number format input correct ')); -             return true; +}Else { AConsole.log (' Please enter the correct format of the mobile phone number '); at             return false; -         } -     }, -     //Check if the string is a legitimate email address -Isemail:function(str) { -         varReg =/^\w+ ((-\w+) | ( \.\w+)) *\@[a-za-z0-9]+ ((\.| -) [a-za-z0-9]+] *\. [a-za-z0-9]+$/; in         //var reg =/\w+ ([-+.] \w+) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) */; -         if(Reg.test (str)) { toConsole.log (' email format input correct ')); +             return true; -}Else { theConsole.log (' Please enter the correct format of email '); *             return false; $         }Panax Notoginseng     }, -     //checks if a string is a number theIsnumber:function(str) { +         varReg =/^\d+$/; A         if(Reg.test (str)) { theConsole.log (str + ' is number ')); +             return true; -}Else { $Console.log (str + ' not a number ')); $             return false; -         } -     }, the     //remove front and back spaces -Trimfunction(str) {Wuyi         varReg =/^\s+|\s+$/G; the         returnStr.replace (Reg, "); -     }, Wu     //Check if string exists in Chinese -Ischinese:function(str) { About         varReg =/[\u4e00-\u9fa5]/GM; $         if(Reg.test (str)) { -Console.log (str + ' exists in Chinese '); -             return true; -}Else { AConsole.log (str + ' does not exist in Chinese ')); +             return false; the         } -     }, $     //Check whether a string is a legitimate postal code theIspostcode:function(str) { the         //The starting number cannot be 0, then 5 digits [1-9]\d{5} the         varReg =/^[1-9]\d{5}$/G; the         //var reg =/^[1-9]\d{5} (?! \d) $/; -         if(Reg.test (str)) { inConsole.log (str + ' is a valid ZIP code format ')); the             return true; the}Else { AboutConsole.log (str + ' is not a valid postal code format ')); the             return false; the         } the     }, +     //Check if the string is a legitimate ID number -Isidcard:function(str) { the         varReg =/^ (^[1-9]\d{7} ((0\d) | ( 1[0-2]) (([0|1|2]\d) |3[0-1]) \d{3}$) | (^[1-9]\d{5}[1-9]\d{3} ((0\d) | ( 1[0-2]) (([0|1|2]\d) |3[0-1]) ((\d{4}) |\d{3}[xx]) $) $/;Bayi         if(Reg.test (str)) { theConsole.log (str + ' is a valid ID number ')); the             return true; -}Else { -Console.log (str + ' is an illegal ID number ')); the             return false; the         } the     }, the     //checks if a string is a legitimate URL -Isurl:function(str) { the         varReg =/^https?:\ /\/([a-za-z0-9_-]) + (\.)?) * (: \d+)? (\/((\.)? (\?)? =?&? [a-za-z0-9_-] (\?)?) *)*$/i; the         if(Reg.test (str)) { theConsole.log (str + ' is a valid URL ');94             return true; the}Else { theConsole.log (str + ' is not a valid URL '); the             return false;98         } About     }, -     //checks if the string is a valid date format Yyyy-mm-dd101IsDate:function(str) {102         varReg =/^[1-2][0-9][0-9][0-9]-[0-1]{0,1}[0-9]-[0-3]{0,1}[0-9]$/;103         if(Reg.test (str)) {104Console.log (str + ' is a valid date format ')); the             return true;106}Else {107Console.log (str + ' is not a valid date format, Yyyy-mm-dd ');108             return false;109         } the     },111     //checks if a string is a legitimate IP address theIsIP:function(str) {113         //1.1.1.1 four segment [0, 255] the         //the first paragraph cannot be 0 . the         //each segment cannot start with 0 the         //117         //Native ip:58.50.120.18 Hubei province Jinzhou Telecom118         varreg =/^ ([1-9]|[ 1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]) (\. ( [0-9]| [1-9] [0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])) {3}$/gi;119         if(Reg.test (str)) { -Console.log (str + ' is a legitimate IP address '));121             return true;122}Else {123Console.log (str + ' is an illegal IP address '));124             return false; the         }126     }127 } - //Test129 //Console.log (myregexp.isqq (' 80583600 ')); the //Console.log (Myregexp.isphone (' 17607160722 '));131 //Console.log (Myregexp.isemail (' [email protected] ')); the //Console.log (Myregexp.isnumber (' 100a '));133 //Console.log (Myregexp.trim (') ');134 //Console.log (Myregexp.ischinese (' baixiaoming '));135 //Console.log (Myregexp.ischinese (' xiaoming '));136 //Console.log (Myregexp.ispostcode (' 412345 '));137 //Console.log (Myregexp.isidcard (' 42091119940927001X '));138 //Console.log (Myregexp.isurl (' https://www.baidu.com/'));139 //Console.log (myregexp.isdate (' 2017-4-4 ')); $ //Console.log (Myregexp.isip (' 1.0.0.0 '));

"JavaScript" JavaScript common regular expression instances