Validating all type of controls in a form using javascript Forms Validation

Form Validation in Javascript

 

//**************Blank check validation*********************

        function check_blank(fldid, msgid) {

            var fld = document.getElementById(fldid);

            if (fld.value.length == 0 || fld.value.charAt(0) == "

") {

 

                document.getElementById(msgid).innerHTML = "The required field has not been filled in";

                //document.getElementById(error_icon_star).innerHTML = '<img src="WebResource.gif" height="15px" style="width:15px;"/>';

                return false;

            }

            document.getElementById(msgid).innerHTML = "&nbsp;";

            //document.getElementById(error_icon_star).innerHTML = '<b style="color:Red">*</b>';

            return true;

        }

        //**************Email formate validation*********************

        function validate_email(fieldid, msgid, error_icon_star) {

            var field = document.getElementById(fieldid);

            with (field) {

                if (check_blank(fieldid, msgid)) {

                    apos = value.indexOf("@");

                    dotpos = value.lastIndexOf(".");

                    if (apos < 1 || dotpos - apos < 2) {

                        document.getElementById(msgid).innerHTML = 'please enter correct email';

                        //document.getElementById(error_icon_star).innerHTML='<img src="WebResource.gif" height="15px" style="width:15px;"/>';

                        return false;

                    }

                    else {

                        document.getElementById(msgid).innerHTML = "&nbsp;";

                        //document.getElementById(error_icon_star).innerHTML='<b style="color:Red">*</b>';

                        return true;

                    }

                }

                return false;

            }

        }

        //**************MobileNo 10 digit validation*********************

        function ValidateMobileNumber(fldid, ErrorMsgid) {

            var fld = document.getElementById(fldid);

            var error = "";

            var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');

            if (fld.value == "") {

                error = "You didn't enter a phone number.\n";

            } else if (isNaN(stripped)) {

                error = "The phone number contains illegal characters.\n";

            } else if (!(stripped.length == 10)) {

                error = "The phone number is the wrong length. Make sure you included an area code.\n";

            }

            if (error.length > 0) {

                document.getElementById(ErrorMsgid).innerHTML = error;

                //document.getElementById(error_icon_star).innerHTML='<img src="WebResource.gif" height="15px" style="width:15px;"/>';

                return false;

            }

            document.getElementById(ErrorMsgid).innerHTML = "&nbsp;";

            //document.getElementById(error_icon_star).innerHTML='<b style="color:Red">*</b>';

            return true;

        }

        //**************ConfirmPassword validation*********************

        function confirm_password(pwd_fieldid, conpwd_fieldid, msgid) {

            var pwd = document.getElementById(pwd_fieldid).value;

            var conpwd = document.getElementById(conpwd_fieldid).value;

            if (pwd != conpwd) {

                document.getElementById(msgid).innerHTML = 'Your passwords do not match. Please type more carefully.';

                //document.getElementById(error_icon_star).innerHTML = '<img src="WebResource.gif" height="15px" style="width:15px;"/>';

                return false;

            }

            document.getElementById(msgid).innerHTML = "&nbsp;";

            // document.getElementById(error_icon_star).innerHTML = '<b style="color:Red">*</b>';

            return true;

        }

        //**************Radiobuttonlist validation*********************

        function validateRadioButtonList(radiobuttonlist_id, msgid) {

            var listItemArray = document.getElementById(radiobuttonlist_id);

            var isItemChecked = false;

            for (var i = 0; i < listItemArray.rows.length; i++) {

                var listItem = document.getElementById(radiobuttonlist_id + "_" + i);

                if (listItem.checked) {

                    isItemChecked = true;

                }

            }

            if (isItemChecked == false) {

                document.getElementById(msgid).innerHTML = "Please select atleast oneitem";

                //document.getElementById(error_icon_star).innerHTML='<img src="WebResource.gif" height="15px" style="width:15px;"/>';

                return false;

            }

            document.getElementById(msgid).innerHTML = "&nbsp;";

            //document.getElementById(error_icon_star).innerHTML='<b style="color:Red">*</b>';

            return true;

        }

        //**************dropdown validation*********************

        function Dropdown_Validation(fieldid, msgid) {

            var empty = document.getElementById(fieldid).value;

            if (empty == "--Select--") {

                document.getElementById(msgid).innerHTML = "Please Select An Item";

                //document.getElementById(error_icon_star).innerHTML='<img src="WebResource.gif" height="15px" style="width:15px;"/>';

                return false;

            }

            document.getElementById(msgid).innerHTML = "&nbsp;";

            //document.getElementById(error_icon_star).innerHTML='<b style="color:Red">*</b>';

            return true;

        }

       //******************Save button validation to all page***********

        function form_submit() {

            var fname = check_blank("<%=fname.ClientID %>", "fnamemsg");

            var lname = check_blank("<%=lname.ClientID %>", "lnamemsg");

            var username = check_blank("<%=username.ClientID %>", "usernamemsg");

            var password = check_blank("<%=password.ClientID %>", "passwordmsg");

            var confirm = confirm_password("<%=password.ClientID %>", "<%=passwordmatch.ClientID %>", "passwordmatchmsg");

            var type = validateRadioButtonList("<%=Rblist.ClientID %>", "typemsg");

            var email = validate_email("<%=email.ClientID %>", "emailmsg");

            var phone = ValidateMobileNumber("<%=phone.ClientID %>", "phonemsg");

            var country = Dropdown_Validation("<%=country.ClientID %>", "countrymsg");

            var state = check_blank("<%=state.ClientID %>", "statemsg");

            var city = check_blank("<%=city.ClientID %>", "citymsg");

            var address = check_blank("<%=address.ClientID %>", "addressmsg");

            if (fname && lname && username && password && confirm && type && email && phone && state && city && address) {

                return true;

            }

            return false;

        }