一些常用的验证

function checkAll() {
             //debugger;
     
             var strMessage = "";
    
             if ($("#ddlAdmcorp").val() == "qxz") {
                 strMessage += "请选择[行政公司]!\n";
                 $("#ddlAdmcorp").focus();
             }
             if ($("#ddlAdmdep").val() == "qxz") {
                 strMessage += "请选择[部门]!\n";
                 $("#ddlAdmdep").focus();
             }
             debugger;
           
             if ($.trim($("#txtProperty").val()).length ==0) {
                 strMessage += "[物业名称]不能为空!\n";
                 $("#txtProperty").focus();
             }
             if ($("#ddlProvince").val() == "qxz") {
                 strMessage += "请选择[省]!\n";
                 $("#ddlProvince").focus();
             }
             if ($("#ddlCity").val() == "qxz") {
                 strMessage += "请选择[市]!\n";
                 $("#ddlCity").focus();
             }
             if ($("#ddlCountry").val() == "qxz") {
                 strMessage += "请选择[县]!\n";
                 $("#ddlCountry").focus();
             }
             if ($("#ddlBusinessCircleType").val() == "qxz") {
                 strMessage += "请选择[商圈类型]!\n";
                 $("#ddlBusinessCircleType").focus();
             }
             if ($.trim($("#txtArea").val()).length == 0) {
                 strMessage += "[面积]不能为空!\n";
                 $("#txtArea").focus();
             }
             else {
                 //验证面积输入的是否为数字
                 var myreg = /^[0-9]+(.[0-9]{2})?$/;
                 if (!myreg.test($("#txtArea").val())) {

                     strMessage += "[面积]请输入正整数或者两位小数的正整数!\n";
                 }
             }
             if ($.trim($("#txtContractSignDate").val()).length == 0) {
                 strMessage += "[合同签订日期]不能为空!\n";
                 $("#txtContractSignDate").focus();
             }
                
             if ($.trim($("#txtContractStartDate").val()).length == 0) {
                 strMessage += "[合同起始日期]不能为空!\n";
                 $("#txtContractStartDate").focus();
             }
             if ($.trim($("#txtContractEndDate").val()).length == 0) {
                 strMessage += "[合同终止日期]不能为空!\n";
                 $("#txtContractEndDate").focus();
             }
             //验证输入的日期格式
             var fmt = "yyyy-MM-dd";
             var dateFlg;
              dateFlg = isDate($.trim($("#txtContractSignDate").val()), fmt);
             if (!dateFlg)
                 strMessage += "[合同签订日期]格式不正确!\n";
       
             dateFlg = isDate($.trim($("#txtContractStartDate").val()), fmt);
             if (!dateFlg)
                 strMessage += "[合同开始日期]格式不正确!\n";

             dateFlg = isDate($.trim($("#txtContractEndDate").val()), fmt);
             if (!dateFlg)
                 strMessage += "[合同终止日期]格式不正确!\n";

             //起始日期不能小于签订日期      
             if ($("#txtContractStartDate").val()<$("#txtContractSignDate").val() ) {
                 strMessage += "合同[起始日期]不能小于[签订日期]!\n";

             }
             //合同 终止日期不能小于起始日期
             if ($("#txtContractEndDate").val() < $("#txtContractStartDate").val()) {
                 strMessage += "合同[终止日期]不能小于[起始日期]!\n";
             }
             if ($.trim($("#txtLessor").val()).length == 0) {
                 strMessage += "[出租人]不能为空!\n";
                 $("#txtLessor").focus();
             }
             if ($.trim($("#ddlLessorType").val()).length == "qxz") {
                 strMessage += "[出租人类型]不能为空!\n";
                 $("#ddlLessorType").focus();
             }
             if ($.trim($("#txtContact").val()).length == "") {
                 strMessage += "[联系人]不能为空!\n";
                 $("#txtContact").focus();
             }
             if ($.trim($("#txtLessee").val()).length == "") {
                 strMessage += "[承租人]不能为空!\n";
                 $("#txtLessee").focus();
             }
             if ($("#ddlRentPayTerms").val() == "qxz") {
                 strMessage += "请选择[租金支付方式]!\n";
                 $("#ddlRentPayTerms").focus();
             }
             //验证物业邮编(如果不为空)
             if ($.trim($("#txtPostcode").val()).length!=0) {
                 var myreg = /^[[0-9]{6}$/;
                 if (!myreg.test($.trim($("#txtPostcode").val()))) {
                     strMessage += "请输入正确的[邮编]!\n";
                     $("#txtPostcode").focus();
                 }
             }
           //todo
             //验证日期格式
             //验证签订日期
             //验证起始日期是否大于终止日期

             //验证联系人邮编
             if ($.trim($("#txtContactPostcode").val()).length!=0) {
                 var myreg = /^[[0-9]{6}$/;
                 if (!myreg.test($.trim($("#txtPostcode").val()))) {
                     strMessage += "请输入正确的[联系人邮编]!\n";
                     $("#txtContactPostcode").focus();
                 }
             }
             //验证联系人email 
             if ($.trim($("#txtContactEmail").val()).length!= 0) {
                 var myreg = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;
                 if (!myreg.test($.trim($("#txtContactEmail").val()))) {
                     strMessage+="请输入正确的Email!\n"
                     $("txtContactEmail").focus();
                 }
             }
             //免租期天数
             if ($.trim($("#txtFreeRentDays").val()).length!=0) {
                 //验证是否为正整数
                 var myreg = /^([1-9])+$/;
                 if (!myreg.test($("#txtFreeRentDays").val())) {
                     strMessage += "[免租期天数]只能输入正整数!\n"
                     $("txtContactEmail").focus();
                 }
             }
             //月租金
             if ($.trim($("#txtRentMonth").val()).length!=0) {
                 var myreg = /^[0-9]+(.[0-9]{2})?$/;
                 if (!myreg.test($.trim($("#txtRentMonth").val()))) {

                     strMessage += "[月租金]请输入正整数或者两位小数的正整数";
                     $("#txtRentMonth").focus();
                 }
             }
             if (strMessage.length != 0) {
                 alert(strMessage);
                 return false;
             }
             else {
                 return true;
             }