JS form Verification

Lists some common format-validated JS methods for querying.

//Check if it is a numberfunctionCheckisinteger (str) {if(str = = ""){         return false; }        if(Str.search (/^[0-9]+$/) < 0){         return false; }        Else{         return true; }}//Check if integerfunctionChecknum (str) {if(!str | |IsNaN (str)) {         return false; } STR= (STR * 1). toString (); if(Str.indexof (".") = =-1){         return false; }        return true;}//Check whether the password is valid, the password is only allowed to be made up of ASCII, this function is only used when modifying or registering a passwordfunctioncheckvalidpasswd (str) {varReg =/^[x00-x7f]+$/; if(!reg.test (str)) {         return false; }        if(Str.length < 6 | | str.length > 16){         return false; }        return true;}//Check whether it is ChinesefunctionIschn (str) {varReg =/^[u4e00-u9fa5]+$/; if(!reg.test (str)) {         return false; }        return true;}//Check if it is a valid real name and can only contain Chinese or uppercase English lettersfunctionIsvalidtruename (strName) {varstr = Trim (strName);//determines whether it is a full English capital or full Chinese, and can contain spaces        varReg =/^[a-z u4e00-u9fa5]+$/; if(Reg.test (str)) {return false; }        return true;}//Check MailboxfunctionIsemail (str) {varreg =/^ ([a-za-z0-9_-]) [email protected] ([a-za-z0-9_-]) + ((\.[ a-za-z0-9_-]{2,3}) $/; returnreg.test (str);}//Check Phone numberfunctionIstel (str) {varreg=/^ ([0-9]|[ \-])+$/G; if(Str.length<7 | | str.length>18){         return false; }        Else{          returnreg.exec (str); }}//Check Agefunctionisage (str) {varMydate=NewDate; varnow=mydate.getfullyear (); if(Str < now-60 | | | str > NOW-18){         return false; }        return true;}//is a valid date format: Yyyy-mm-ddfunctionIsdateformat (TXT) {if(txt==NULL|| TXT = = "") {return false;} Else{         varRegex =/[0-9]{1,4}-[0-9]{1,2}-[0-9]{1,2}/; if(regex.test (TXT)) {varNoarr = Txt.split ("-"); varYear = eval (noarr[0]); varmonth = eval (noarr[1]); varDay = eval (noarr[2]); if(Year < 1 | | Month < 1 | | month > * | | Day < 1 | | Day > 31) {return false;} if(Month = = 4 | | month = = 6 | | month = = 9 | | month = = one) && Day > 30) {return false;} if(Month = = 2){           if(Year% 4 = 0) && Day > 29) {return false;} if(year% 4 = = 0){            if(Year% = = 0 && year%!! = 0 && Day > 29) {return false;} Else if(Day > 28){             return false; }           }          }          return false; }         Else{          return true; }        }}//detects 15-bit or 18-bit ID numbersfunctionisidcardnum (TXT) {if(txt = =NULL|| TXT = = ""){         return false; }        varIdno =txt.tostring (); varLen =idno.length; varreg; varNoarr; varDatestr= ""; if(len! = && Len! = 18){         return false; }        Else if(len = = 15) {reg=/(\d{3}) (\d{3}) (\d{2}) (\d{2}) (\d{2}) (\d{3})/; if(Reg.test (idno) = =false){          return false; }         Else{Noarr=reg.exec (IDNO); Datestr= "+noarr[3]+"-"+noarr[4]+"-"+noarr[5]; returnIsdateformat (DATESTR); }        }        Else{reg=/(\d{1}) (\d{1}) (\d{1) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) (\d{1}) {1}) (\d{1}) ([0-9xx]{1})/; if(Reg.test (idno) = =false){          return false; }         Else{Noarr=reg.exec (IDNO); Datestr= noarr[7]+noarr[8]+noarr[9]+noarr[10]+ "/" +noarr[11]+noarr[12]+ "/" +noarr[13]+noarr[14]; if(IsNaN (NewDate (datestr)) = =false){           varWI =NewArray (0,7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2); varAMT = 0; vari; varChkno =NewArray ("1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2");  for(i=1;i<18;i++) {Amt+ = (noarr[i]*Wi[i]); }           return(chkno[amt%) = = Noarr[18].touppercase ()); }          Else{           return false; }         }        }}

JS form Verification