JS Form validation function

var formvalid = function (frm) {
This.frm = frm;
this.errmsg = new Array ();
This.errname = new Array ();

this.required = function (inputobj) {
if (typeof (inputobj) = = "undefined" | | | InputObj.value.trim () = = "") {
return false;
}
return true;
}

This.eqaul = function (Inputobj, formelements) {
var fstobj = inputobj;
var sndobj = Formelements[inputobj.getattribute (' Eqaulname ')];

if (fstobj!= null && sndobj!= null) {
if (Fstobj.value!= sndobj.value) {
return false;
}
}
return true;
}

this.gt = function (Inputobj, formelements) {
var fstobj = inputobj;
var sndobj = Formelements[inputobj.getattribute (' Eqaulname ')];

if (fstobj!= null && sndobj!= null && fstObj.value.trim ()!= ' && SndObj.value.trim ()!= ') {
if (parsefloat (fstobj.value) <= parsefloat (Sndobj.value)) {
return false;
}
}
return true;
}

This.compare = function (Inputobj, formelements) {
var fstobj = inputobj;
var sndobj = formelements[inputobj.getattribute (' objectname ')];
if (fstobj!= null && sndobj!= null && fstObj.value.trim ()!= ' && SndObj.value.trim ()!= ') {
if (!) ( Eval (parsefloat (fstobj.value) + inputobj.getattribute (' operate ') + parsefloat (sndobj.value))) {
return false;
}
}
return true;
}

This.limit = function (inputobj) {
var len = inputObj.value.length;
if (len) {
var MINV = parseint (Inputobj.getattribute (' min '));
var maxv = parseint (Inputobj.getattribute (' Max '));
MINV = MINV | | 0;
MAXV = MAXV | | Number.MAX_VALUE;
return MINV <= len && len <= maxv;
}
return true;
}

This.range = function (inputobj) {
var val = parseint (Inputobj.value);
if (Inputobj.value) {
var MINV = parseint (Inputobj.getattribute (' min '));
var maxv = parseint (Inputobj.getattribute (' Max '));
MINV = MINV | | 0;
MAXV = MAXV | | Number.MAX_VALUE;

Return Minv <= Val && val <= maxv;
}
return true;
}

this.requirechecked = function (inputobj,formelements) {
var MINV = parseint (Inputobj.getattribute (' min '));
var maxv = parseint (Inputobj.getattribute (' Max '));
var arrayname = null;
var pos = inputObj.name.indexOf (' [');
if (pos!=-1)
Arrayname = InputObj.name.substr (0,pos);
MINV = MINV | | 1;
MINV = MINV | | 0;

MAXV = MAXV | | Number.MAX_VALUE;

var checked = 0;
if (!arrayname) {
var groups = Document.getelementsbyname (inputobj.name);
for (Var i=0;i<groups.length;i++) {
if (groups[i].checked) checked++;
}

} else {
for (Var i=0;i<formelements.length;i++) {
var e = formelements[i];
if (e.checked==true && e.type== ' checkbox ')
&& e.name.substring (0,arrayname.length) ==arrayname) {
checked++;
}

}
}
Return MINV <= checked && checked <= maxv;
}

This.filter = function (inputobj) {
var value = Inputobj.value;
var allow = Inputobj.getattribute (' Allow ');
if (Value.trim ()) {
Return to New RegExp ("^.+." =ext) (EXT) $ ". Replace (/ext/g, Allow.split (/s*,s*/). Join (" | "))," GI "). Test (value);
}
return true;
}

This.isno = function (inputobj) {
var value = Inputobj.value;
var novalue = Inputobj.getattribute (' Novalue ');
return value!=novalue;
}
This.istelephone = function (inputobj) {
Inputobj.value = InputObj.value.trim ();
if (Inputobj.value = = "") {
return true;
} else {
if (! RegExps.isMobile.test (inputobj.value) &&! RegExps.isPhone.test (Inputobj.value)) {
return false;
}
}
return true;
}
This.checkreg = function (Inputobj, Reg, msg) {
Inputobj.value = InputObj.value.trim ();

if (Inputobj.value = = "") {
return true;
} else {
Return Reg.test (Inputobj.value);
}
}

    this.passed = function () {
        if ( This.errMsg.length > 0) {
            Formvalid.showerror (This.errmsg,this.errname,this.frm.name);
   if (This.errname[0].indexof (' [') ==-1) {
              frt = Document.getelementsbyname (this.errname[0]) [0];
    if (frt.type== ' text ' | | | | | frt.type== ' password ') {
      Frt.focus ();
    }
   }
            return false;
       } else {
          return Formvalid.succeed ();
       }
   }

this.adderrormsg = function (name,str) {
This.errMsg.push (str);
This.errName.push (name);
}

This.addallname = function (name) {
FormValid.allName.push (name);
}
}
Formvalid.allname = new Array ();
Formvalid.showerror = function (errmsg) {
var msg = "";
for (i = 0; i < errmsg.length; i++) {
msg + + "-" + errmsg[i] + "n";
}
Alert (msg);
}
Formvalid.succeed = function () {
return true;
}
Function Validator (frm) {
var formelements = frm.elements;
var fv = new Formvalid (frm);
Formvalid.allname = new Array ();
for (var i=0; i<formelements.length;i++) {
if (formelements[i].disabled==true) continue;
var msgs = Fvcheck (formelements[i],fv,formelements);
if (msgs.length>0) {
For (n in msgs) {
Fv.adderrormsg (Formelements[i].name,msgs[n]);
}
}
}
return fv.passed ();
}
function Fvcheck (e,fv,formelements) {
var validtype = e.getattribute (' valid ');
var errormsg = E.getattribute (' errmsg ');
if (!errormsg) {
ErrorMsg = ';
}
if (validtype==null) return [];
Fv.addallname (e.name);
var VTS = validtype.split (' | ');
var ems = errormsg.split (' | ');
var r = [];
for (Var j=0 j<vts.length; J + +) {
var curvalidtype = vts[j];
var curerrormsg = ems[j];
var Validresult;
Switch (curvalidtype) {
Case ' Isnumber ':
Case ' Isemail ':
Case ' Isphone ':
Case ' IsMobile ':
Case ' Isidcard ':
Case ' Ismoney ':
Case ' Iszip ':
Case ' isqq ':
Case ' Isint ':
Case ' Isenglish ':
Case ' Ischinese ':
Case ' Isurl ':
Case ' isDate ':
Case ' Istime ':
Validresult = Fv.checkreg (e,regexps[curvalidtype],curerrormsg);
Break
Case ' regexp ':
Validresult = Fv.checkreg (e,new RegExp (E.getattribute (' RegExp '), "G"), curerrormsg);
Break
Case ' Custom ':
Validresult = eval (e.getattribute (' custom ') + ' (e,formelements) ');
Break
Default:
Validresult = eval (' FV. ') +curvalidtype+ ' (e,formelements) ');
Break
}
if (!validresult) R.push (curerrormsg);
}
return R;
}
String.prototype.trim = function () {
Return This.replace (/^s*|s*$/g, "");
}
var regexps = function () {};
Regexps.isnumber =/^[-+]?d+ (. d+)? $/;
Regexps.isemail =/([w.] +) @ ([[0-9]{1,3}. [0-9] {1,3}. [0-9] {1,3}.) | (([w-]+.) +)) ([a-za-z]{2,4}| [0-9] {1,3}) (]?) /;
Regexps.isphone =/^ ((d{2,3}) | ( d{3}-))? ((0d{2,3}) |0d{2,3}-)? [1-9]d{6,7} (-d{1,4})? $/;
Regexps.ismobile =/^ ((d{2,3}) | ( d{3}-))? (13|15|18) d{9}$/;
Regexps.isidcard =/(^d{15}$) | (^d{17}[0-9xx]$)/;
Regexps.ismoney =/^d+ (. d+)? $/;
Regexps.iszip =/^[1-9]d{5}$/;
REGEXPS.ISQQ =/^[1-9]d{4,10}$/;
Regexps.isint =/^[-+]?d+$/;
Regexps.isenglish =/^[a-za-z]+$/;
Regexps.ischinese =/^[u0391-uffe5]+$/;
Regexps.isurl =/^http[s]?:/ /[a-za-z0-9]+. [a-za-z0-9]+[/=?%-&_~ ' @[] ': +!] * ([^<> ""]) *$/;
Regexps.isdate =/^d{4}-d{1,2}-d{1,2}$/;
Regexps.istime =/^d{4}-d{1,2}-d{1,2}sd{1,2}:d {1,2}:d {1,2}$/;