查看字符串是否日期格式的函数，原创，很简单，而且大部分日期格式都支持，比如年月日，月日年等格式均可：

function isDate(val) {

return new Date(val) != "Invalid Date";

}

 

//获取当前时间，格式YYYY-MM-DD

function getNowFormatDate() {

var date = new Date();

var seperator1 = "-";

var year = date.getFullYear();

var month = date.getMonth() + 1;

var strDate = date.getDate();

if (month >= 1 && month <= 9) {

month = "0" + month;

}

if (strDate >= 0 && strDate <= 9) {

strDate = "0" + strDate;

}

var currentdate = year + seperator1 + month + seperator1 + strDate;

return currentdate;

}

 

//获取当前时间，格式YYYY-MM-DD HH:MM:SS

function getNowFormatDateTime() {

var date = new Date();

var seperator1 = "-";

var seperator2 = ":";

var month = date.getMonth() + 1;

var strDate = date.getDate();

if (month >= 1 && month <= 9) {

month = "0" + month;

}

if (strDate >= 0 && strDate <= 9) {

strDate = "0" + strDate;

}

var currentdate = date.getFullYear() + seperator1 + month + seperator1 + strDate

+ " " + date.getHours() + seperator2 + date.getMinutes()

+ seperator2 + date.getSeconds();

return currentdate;

}

 

确定是日期格式后，比较两个字符串日期也很简单，直接转为日期比较即可，如下：

if(Date.parse(new Date(expireOrSignDate)) <= Date.parse(new Date()))

{...}

 

//前台接收get参数值

function getQueryString(name) {

            var queryStrings = window.location.search.split('&');

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

                if (queryStrings[i].indexOf(name + "=") != -1)

                    return queryStrings[i].substr(queryStrings[i].indexOf(name + "=") + name.length + 1, queryStrings[i].length);

            }

            return "";

        } 

 

 

//前台接收get参数值，这种实现也可以

function getQueryString(name) {

 var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");

 var r = window.location.search.substr(1).match(reg);

 if (r != null) return unescape(r[2]); return null;

}

 

把对象转换成string，此方法名称只能为parseString，要换名称就全部替换

parseString = function (obj) {

 switch (typeof (obj)) {

  case 'string':

   //return '"' + obj.replace(/([", '\\$1') + '"';

   return '"' + obj + '"';

  case 'array':

   return '[' + obj.map(parseString).join(',') + ']';

  case 'object':

   if (obj instanceof Array) {

    var strArr = [];

    var len = obj.length;

    for (var i = 0; i < len; i++) {

     strArr.push(parseString(obj[i]));

    }

    return '[' + strArr.join(',') + ']';

   } else if (obj == null) {

    return 'null';

   } else {

    var string = [];

    for (var property in obj) string.push(parseString(property) + ':' + parseString(obj[property]));

    return '{' + string.join(',') + '}';

   }

  case 'number':

   return obj;

  default:

   return obj;

 }

}

 

//利用option的text的值来默认选中某一项：

注意第一种方法有时不行，推荐第二种

1，$("#drpBrand").find("option[text='" + $("#hdBrand").val() + "']").attr("selected", true).change();

2，$("#drpBrand").find("option:contains('" + $("#hdBrand").val() + "')").attr("selected", true).change();

 

js中，按照值删除数组中的某个元素

Array.prototype.indexOf = function(val) {

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

                if (this[i] == val) return i;

            }

            return -1;

        };

        Array.prototype.remove = function(val) {

            var index = this.indexOf(val);

            if (index > -1) {

                this.splice(index, 1);

            }

        };

如：

        var array = [1, 2, 3, 4, 5];

        array.remove(3);

 

 

/// <summary>

  /// 复制对象

  /// </summary>

  /// <param name="target">目标对象</param>

  /// <param name="source">原始对象</param>

        private void TryUpdateModel(Object target, Object source)

        {

            var tprops = target.GetType().GetProperties();

            foreach (var prop in source.GetType().GetProperties())

            {

                var tprop = tprops.FirstOrDefault(p => p.Name.Equals(prop.Name));

                if (tprop == null) continue;

                tprop.SetValue(target, prop.GetValue(source, null), null);

            }

        }

 

/// <summary>

  /// 注册前台脚本

  /// </summary>

  /// <param name="scriptName">前台脚本变量名</param>

  /// <param name="scriptValue">脚本Json对象</param>

  protected void RegisterScript(string scriptName, object scriptValue)

  {

   var json = string.Format("{0}={1};", scriptName, JsonHelper.JsonSerialize(scriptValue));

   ClientScript.RegisterClientScriptBlock(typeof(string), scriptName + "json", json, true);

  }

 

//将[{name:'name1',value:'value1'}]转换为{'name1':'value1'}

function fixData(d) {

    var ndata = {};

    for (var i in d) {

        ndata[d[i].name] = d[i].value;

    }

    return ndata;

} 

 

//限制某个文本框只能输入数字，无法输入字母

$('#dvMain').find(".memPhoneSearch input")

    .keypress(function (e) {

        var chars = "0123456789";

        var chr = String.fromCharCode(e.charCode == undefined ? e.keyCode : e.charCode);

        return e.ctrlKey || e.metaKey || (chr < ' ' || chars.indexOf(chr) > -1);

    })

 

 

打开的pop窗口随着鼠标点击的dom元素而定位展示的js代码：

e是click事件，o是pop窗口的宽度或高度，

eventX = function (e, o) {

  e = e || window.event;

  o = o || 0;

  x = e.pageX || e.clientX + document.body.scroolLeft;

  return x + o > screen.availWidth ? screen.availWidth - o : x - o / 2 < 0 ? 0 : x - o / 2;

 }

 

eventY = function (e, o) {

  e = e || window.event;

  o = o || 0;

  alert('clientY = ' + e.clientY);

  y = e.pageY || e.clientY + document.body.scrollTop;

  return y + o > screen.availHeight ? screen.availHeight - o : y - o / 2 < 0 ? 0 : y - o / 2;

 }

 

 

一个button不在某个form内，点击该button时提交某个form的代码：

//e.preventDefault()可以不要

$("dvMain").find(".btnMemSearch").click(function (e) { e.preventDefault(), $(".memPhoneSearch form").submit() });

 

 

异步ajax方法封装（post传值，参数和返回值都是json形式）：

注意一点：前端利用此方法异步调用后台WebService中的方法时，后台返回前台的Json字符串是有长度限制的，如果后台返回的Json字符串过长系统是会报错的，此时应在后台的web.config中的根节点下（即configuration节点内部）添加以下配置节点即可解决，当然具体返回的字符串的长度可以根据实际情况进行配置：

<system.web.extensions> 

    <scripting> 

      <webServices> 

        <jsonSerialization maxJsonLength="1024000000" /> 

      </webServices> 

    </scripting> 

</system.web.extensions>

 

ajax = function (uri, data, callback) {

 $.ajax({

  type: "post",

  cache: false,

  url: uri,

  data: data,

  dataType: "json",

  contentType: "application/json",

  success: callback,

  error: function (res) { alert(res) }

 });

}

使用此方法调用webservice后台方法 实例（注意 res.d）：

前台：

ajax("/Web/WebService/CorseListService.asmx/GetCorseList", parseString({ CourseType: $("#ddlCourseType").val(), ClassID: $(this).val() }),

                    function (res) {

                        var data = eval("(" + res.d + ")");

                        //var data = $.parseJSON(res.d);

                        bindSelect("ddlCourse", data);

                        courseLoaded = true;

                    });

 

后台方法：

[WebMethod(EnableSession = true)]

    public string GetCorseList(string CourseType, string ClassID) {

        string result = "";

        string where = " DataState=1 and ClassTypeID = " + CourseType;

        if (ClassID != "-1")

        {

            List<ClassInfo> lc = ciMan.GetModelList("ID=" + ClassID);

            if (lc != null && lc.Count > 0)

            {

                where += "  and JobTypeID=" + lc[0].JobTypeId;

            }

        }

        List<NewAddCourse> adc = nacMan.GetModelList(where);

        result = JsonConvert.SerializeObject(adc.Select(o => new { Display = o.CourseName, Value = o.Id }).ToList());

        return result;

    }

 

传递对象的例子：

前台：

var item = {

                    Id: $("#hfItemID").val(),

                    SchoolId: $("#<%= ddlSchoolName.ClientID %>").val(),

                    ClassId: $("tr.trHide").is(":hidden") ? "-1" : $("#<%= ddlClass.ClientID %>").val(),

                    CourseId: $("#ddlCourse").val(),

                    TeacherId: $("tr.trHide").is(":hidden") ? "-1" : $("#<%= ddlTeacher.ClientID %>").val(),

                    Classroom: $("tr.trHide").is(":hidden") ? "-1" : $("#<%= ddlRoom.ClientID %>").val(),

                    CourseType: $("#ddlCourseType").val(),

                    StartTime: $("#txtStartDate").val(),

                    EndTime: $("#txtEndDate").val(),

                    StartTimeType: ($("#chkAllDay").attr("checked") ? 0 : $("#ddlStartType").val()),

                    EndTimeType: ($("#chkAllDay").attr("checked") ? 0 : $("#ddlEndType").val()),

                    ClassName: $("tr.trHide").is(":hidden") ? "-1" : $("#<%= ddlClass.ClientID %> option:selected").text(),

                    TeacherName: $("tr.trHide").is(":hidden") ? "-1" : $("#<%= ddlTeacher.ClientID %> option:selected").text(),

                    ClassroomName: $("tr.trHide").is(":hidden") ? "-1" : $("#<%= ddlRoom.ClientID %> option:selected").text(),

                    CourseName: $("#ddlCourse option:selected").text(),

                    Year: $("#hfYear").val()

                };

                ajax("/Web/WebService/CorseListService.asmx/ModifyCorse", parseString({ timeItem: item }),

                    function (res) {

                        var data = eval("(" + res.d + ")");

                        if (data.result == 1) {

                            $("#btnCommit").attr("disabled", false);

                            $("#btnCommit").show();

                            if (item.Id == 0) {

                                calendar.fullCalendar('renderEvent',

                                    data.item,

                                    true // make the event "stick"

                                );

                            }

                            else if (item.Id > 0)

                            {

                                var event = $('#calendar').fullCalendar('clientEvents', item.Id)[0];

                                //event = data.item;

                                //event.id = timeItem.Id;

                                event.title = data.item.title;

                                event.start = data.item.start;

                                event.end = data.item.end;

                                event.allDay = data.item.allDay;

                                event.courseType = data.item.courseType;

                                event.courseID = data.item.courseID;

                                event.classID = data.item.classID;

                                event.classRoomID = data.item.classRoomID;

                                event.teacherID = data.item.teacherID;

                                event.startType = data.item.startType;

                                event.endType = data.item.endType;

                                event.backgroundColor = data.item.backgroundColor;

                                event.year = data.item.year;

                                calendar.fullCalendar('updateEvent', event);

                            }

                            close();

                        }

                        else {

                            alert(data.item);

                        }

                    });

后台被调用方法：

[WebMethod(EnableSession = true)]

    public string ModifyCorse(NewTimetableMore timeItem)

    {

        UserInfo user = new UserInfo();

        if (Session["UserBase"] != null)

        {

            user = (UserInfo)Session["UserBase"];

        }

        string result = JsonConvert.SerializeObject(new { result = 0, item = "保存失败，请稍后重试！" });

        if (timeItem != null)

        {

            bool flag = false;

            CalendarItem calendar = new CalendarItem();

            timeItem.UpdateDate = DateTime.Now;

            timeItem.UpdateId = user.Id;

            //如果选择的是开始时间的上午和结束时间的下午就按照全天写入DB

            if (timeItem.StartTimeType == 1 && timeItem.EndTimeType == 2)

            {

                timeItem.StartTimeType = 0;

                timeItem.EndTimeType = 0;

            }

            //如果是新增记录，则使用当前年份

            if (timeItem.Id == 0)

            {

                timeItem.Year = timeItem.Year ?? System.DateTime.Now.Year;

            }

            timeItem.LengthTime = GetSingleCourseLengTime(timeItem.StartTime, timeItem.StartTimeType, timeItem.EndTime, timeItem.EndTimeType);

            //检查该课程的排课时长是否允许添加该排课

            double LeaveTime = nTm.GetCourseTimeLeaveTime(timeItem.SchoolId, (timeItem.Year ?? 0), timeItem.ClassId, timeItem.CourseId, timeItem.CourseType, timeItem.Id);

            if (LeaveTime < timeItem.LengthTime)

            {

                result = JsonConvert.SerializeObject(new { result = 0, item = (LeaveTime > 0 ? string.Format("该课程剩余时长为 {0} 天，请缩短排课天数！" , LeaveTime) : "该课程排课时间已满，无法再添加课程时长！") });

                return result;

            }

            if (timeItem.Id == 0)

            {

                timeItem.DataState = 1;

                timeItem.CreateDate = DateTime.Now;

                timeItem.CreateId = user.Id;

                NewTimetable DBTimeItem = new NewTimetable();

                TryUpdateModel(DBTimeItem, timeItem);

                int TimeID = nTm.Add(DBTimeItem);

                if (TimeID > 0)

                {

                    flag = true;

                    timeItem.Id = TimeID;

                }

            }

            else if (timeItem.Id > 0)

            {

                var item = nTm.GetModel(timeItem.Id);

                item.SchoolId = timeItem.SchoolId;

                item.CourseType = timeItem.CourseType;

                item.CourseId = timeItem.CourseId;

                item.ClassId = timeItem.ClassId;

                item.Classroom = timeItem.Classroom;

                item.TeacherId = timeItem.TeacherId;

                item.StartTime = timeItem.StartTime;

                item.EndTime = timeItem.EndTime;

                item.EndTimeType = timeItem.EndTimeType;

                item.StartTimeType = timeItem.StartTimeType;

                item.LengthTime = timeItem.LengthTime;

                item.UpdateDate = timeItem.UpdateDate;

                item.UpdateId = timeItem.UpdateId;

                flag = nTm.Update(item);

            }

            if (flag)

            {

                calendar.id = timeItem.Id;

                calendar.title = GetTitleMoreInfo(timeItem);

                calendar.start = timeItem.StartTime.ToString("yyyy-MM-dd");

                calendar.end = timeItem.EndTime.ToString("yyyy-MM-dd");

                //calendar.allDay = (timeItem.StartTimeType == 0 && timeItem.EndTimeType == 0);

                calendar.allDay = true;

                calendar.courseType = timeItem.CourseType;

                calendar.courseID = timeItem.CourseId;

                calendar.classID = timeItem.ClassId;

                calendar.classRoomID = timeItem.Classroom;

                calendar.teacherID = timeItem.TeacherId;

                calendar.startType = timeItem.StartTimeType;

                calendar.endType = timeItem.EndTimeType;

                calendar.backgroundColor=BackGroundColorList[timeItem.CourseType - 1];

                calendar.year = timeItem.Year;

                result = JsonConvert.SerializeObject(new { result = 1, item = calendar });

            }

        }

        return result;

    }

 

向后台方法传递参数是数组时的实例：

前台：

相当于调用时参数形式为：CustomerID=1001&CustomerID=1002&CustomerID=1003这种形式可以调用后台参数为string[] CustomerID的参数

此处前台之所以用escape方法，是因为Content参数是html代码，后台接受时用Content = Server.UrlDecode(Content);解密获取参数。

var val = [];

                $(".scrollBox2b li.cur").each(function () {

                    //$(this).hasClass("cur") && val.push($(this).attr("data-cid"));

                    val.push($(this).attr("data-cid"));

                })

                if (val.length > 0) {

                    $.get("@Url.Action("MailContentMode")", function (data) {

                        var MailContent = data.replace("$EmailContent$", $("#calcResult").html());

                        var param = "CustomerID=" + val.join("&CustomerID=") + "&Subject=" + escape(escape("房贷计算结果")) + "&Content=" + escape(escape(MailContent));

                        $.post("@Url.Action("SendEmail")", param, function (data) {

                            alert(data.msg);

                        })

                    })

                }

                else {

                    alert("请至少选择一个客户！");

                }

后台被调方法：

public ActionResult SendEmail(Guid[] CustomerID, string Subject, string Content)

        {

            string Msg = "发送失败，请稍后重试！";

            int result = 0;

            Subject = Server.UrlDecode(Subject);

            Content = Server.UrlDecode(Content);

   var Customers = new CustomerService().Filter(p => CustomerID.Contains(p.ID)).ToList();

            Customers = Customers.Where(p=>p.Email.IsEmail()).ToList();

            var mail = new FocusEmail

            {

                Subject = Subject,

                Body = Content,

                IsBodyHtml = true

            };

            List<FocusReceiver> Receivers=new List<FocusReceiver>();

            foreach (var cus in Customers)

            {

                Receivers.Add(

                    new FocusReceiver

                    {

                        Email = cus.Email,

                        FullName = cus.Name

                    }

                );

            }

            if (Receivers.Count() > 0)

            {

                if (Email.Send(mail, Receivers.ToArray()).ToLower() == "success")

                {

                    Msg = "发送成功";

                    result = 1;

                }

                else

                {

                    Msg = "发送失败，请稍后重试！";

                    result = -1;

                }

            }

            else

            {

                Msg = "发送失败，没有有效的邮箱";

                result = -2;

            }

            return Json(new { result = result, msg=Msg });

        }

 

再如：

前台:

var cid = [], rid = [], fid = $("#FID").val();

  $(".data_distribution_table tbody :checkbox[name=cid]:checked").each(function () { cid.push($(this).val()) })

  $(".label_w :checkbox[name=rid]:checked").each(function () { rid.push($(this).val()) })

  if (!$(".table_d").hasClass("disabled")) {

   $.post("@Url.Action("Alloc")", "cid=" + cid.join("&cid=") + "&rid=" + rid.join("&rid="), function (res) {

    alertE(res.msg);

   })

  }

后台：

public ActionResult Alloc(Guid[] cid, Guid[] rid)

  {

   var cl = cid.Length;//客户数

   var rl = rid.Length;//顾问数

   var size = cl / rl;//每人分配数

   var lft = cl % rl;//剩余未分配数

   var offset = 0;

   var ser = new CustomerService();

   var iser = new ImportCustomerService();

   for (var i = 0; i < rl; i++)

   {

    List<Guid> lcid = new List<Guid>(size);

    for (var j = 0; j < size; j++)

    {

     var idx = i * size + j + offset;

     if (cl > idx) lcid.Add(cid[idx]);

    }

    if (i < lft)

    {

     var idx = (i + 1) * size + offset;

     offset++;

     if (cl > idx) lcid.Add(cid[idx]);

    }

    var trid = rid[i];

    ser.Update(p => lcid.Contains(p.ID), p => new Customer { RealtorID = trid });

   }

   foreach (var item in iser.Filter(p => p.Customer.Any(x => cid.Contains(x.ID))).Select(p => new { p.ID, Cnt = p.Customer.Count(x => x.RealtorID.HasValue) }).ToList())

   {

    var iid = item.ID;

    var icnt = item.Cnt;

    iser.Update(p => p.ID == iid, p => new ImportCustomer { DistributionRate = icnt });

   }

   return Json(new { success = true, msg = "分配成功" }, JsonRequestBehavior.AllowGet);

  }

 

js绑定select：

bindSelect = function (selectid, jsondata) {

    addSelectNullItem(selectid);

    for (var item in jsondata) {

        addSelectItem(selectid, jsondata[item].Display, jsondata[item].Value);

    }

}

 

addSelectItem = function (selectid, text, value) {

    $("#" + selectid + "").append("<option value='" + value + "'>" + text + "</option>");

}

addSelectNullItem = function (selectid) {

    $("#" + selectid + "").empty();

    $("#" + selectid + "").append("<option value='-1'>--请选择--</option>");

}

或

//加载类别信息

    function tmpSmsLoadCategory(data) {

        var c = $('#selectID').html('');

        for (var i in data) {

            $('<option></option>').text(data[i].ExtValue).val(data[i].ExtCode).appendTo(c);

        }

    }

 

 

// 对Date的扩展，将 Date 转化为指定格式的String  

// 月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符，  

// 年(y)可以用 1-4 个占位符，毫秒(S)只能用 1 个占位符(是 1-3 位的数字)  

// 例子：  

// (new Date()).format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423  

// (new Date()).format("yyyy-M-d h:m:s.S")      ==> 2006-7-2 8:9:4.18  

Date.prototype.format = function (fmt) { //author: meizz  

 var o = {

  "M+": this.getMonth() + 1,                 //月份  

  "d+": this.getDate(),                    //日  

  "h+": this.getHours(),                   //小时  

  "m+": this.getMinutes(),                 //分  

  "s+": this.getSeconds(),                 //秒  

  "q+": Math.floor((this.getMonth() + 3) / 3), //季度  

  "S": this.getMilliseconds()             //毫秒  

 };

 if (/(y+)/.test(fmt))

  fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));

 for (var k in o)

  if (new RegExp("(" + k + ")").test(fmt))

   fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));

 return fmt;

}