这次开始的项目是PC版的，貌似有2年没正儿八经的折腾PC端了。

言归正传，这次功能中有个选择日期段的功能，本来不麻烦的事情，但是PM非要参照另外一个网站的效果来做，把别人代码扒下来一看，我去，08年的插件，很多功能不能满足当前，PM非要那效果，时间又TM有限，就又找了个国外的插件daterangepicker，基于bootstrap，跟需求长得很像，功能非常强大，需求都能满足，但是...但是，PM和测试说不好用。。。折腾了半天源代码，优化了下，时间来不及只能凑合用着。

重新动手写了个。依赖jquery和moment.js(主要处理日期，如果自己处理也可以不需要)，

先看效果图

使用方法：

var daterangepicker = new DateRangePicker();daterangepicker.init({ "ele": $("#daterange"), "pos":"left", "min_date": "1990-01-01", "format": "YYYY:MM:DD", "updateDateFn":function(){ console.log(daterangepicker.getDate()) }});

基本思路是：

创建一个日期选择构造函数

function DateRangePicker() {this.start_picker = null;this.end_picker = null;}

初始化日期构造函数，日期段由两个单独的日期选择组成，当起始日期和结束日期变化时要调用构造函数的updateDate方法，通知日期发生了变化。

DateRangePicker.prototype.init = function(opts) { var self = this; this.opts = $.extend({ "pos":"left",//日历位置，靠左或靠右 "min_date":"1970-01-01",//最小日期 "updateDateFn":function(){//日期更新回调 } }, opts || {}); this.createCalendarWrap(); this.$wrap=this.opts.ele.parents(".ui-datepicker"); this.start_picker = new DatePicker();//起始日期日历 this.end_picker = new DatePicker();//结束日期日历 this.start_picker.init({ "container": this.$wrap.find(".calendar-container"), "min_date":self.opts.min_date, "yearOffset": 20, "updateCallback": function(){ self.updateDate(); } }); this.end_picker.init({ "container": this.$wrap.find(".calendar-container2"), "yearOffset": 20, "min_date":self.opts.min_date, "updateCallback": function(){ self.updateDate(); } }); this.bindEvent();};

处理日期发生变化的情况，比如起始日期大于结束日期，要进行互换。

DateRangePicker.prototype.updateDate = function() { var self = this; var start_date = moment(self.start_picker.currentDate).format(self.opts.format); var end_date = moment(self.end_picker.currentDate).format(self.opts.format); var start_date_time=new Date(self.start_picker.currentDate).getTime(); var end_date_time=new Date(self.end_picker.currentDate).getTime(); if(start_date_time>new Date().getTime()){ self.start_picker.setCurrentDate(new Date()); } if(end_date_time>new Date().getTime()){ self.end_picker.setCurrentDate(new Date()); } if(start_date_time>end_date_time){ self.opts.ele.val(end_date + "~" + start_date); }else{ self.opts.ele.val(start_date + "~" + end_date); } $(".ui-daterangepicker-range li").removeClass("active"); self.opts.updateDateFn.call(null,this.getDate());//日期更新后重新获取当前的起始和结束日期};

获取起始和结束日期

//获取起始日期和结束日期段,起始日期若大于结束日期则互换DateRangePicker.prototype.getDate = function() { var start_date=Math.min(this.start_picker.currentDate.getTime(),this.end_picker.currentDate.getTime()); var end_date=Math.max(this.start_picker.currentDate.getTime(),this.end_picker.currentDate.getTime()); start_date=moment(start_date).format(this.opts.format); end_date=moment(end_date).format(this.opts.format); return { "start_date":start_date, "end_date": end_date };};

提供动态设置当前起始日期和结束日期的方法

//设置起始日期和结束日期DateRangePicker.prototype.setDate = function(start_date, end_date) { this.start_picker.setCurrentDate(new Date(start_date)); this.end_picker.setCurrentDate(new Date(end_date)); this.updateDate();};

创建一个容器，因为日期选择要刚好在日期文本框下面，在日期文本框外面包一层方便定位。

//创建日期段容器DateRangePicker.prototype.createCalendarWrap = function() { var $parent=this.opts.ele.parents(".ui-datepicker"); var h=$parent.height(),w=$parent.width(); var wrap = '<div class="ui-daterangepicker-wrap" style="top:'+h+'px;'+this.opts.pos+':0"><div class="ui-calendar"><p class="calendar-title">开始日期</p><div class="calendar-container"></div></div>' + '<div class="ui-calendar"><p class="calendar-title">结束日期</p><div class="calendar-container2"></div></div>' + '<div class="ui-daterangepicker-range"><ul>' + '<li range-key="今日">今日</li>' + '<li range-key="昨日">昨日</li>' + '<li range-key="最近7日">最近7日</li>' + '<li range-key="最近30日">最近30日</li>' + '</ul>' + '</div></div>'; $parent.append(wrap);};

接下来是单个日期选择的处理

定义构造函数和初始化

function DatePicker() { this.opts = null; this.today = new Date(); //今天 this.todayDate=this.today.getDate(); this.currentDate = new Date(); //当前选中日期}DatePicker.prototype.init = function(opts) { var opts = $.extend({ 'min_date':"1970-01-01", "yearOffset": 20//默认往前推20年 }, opts || {}); this.opts = opts; this.renderCalendar(); this.bindEvent();};

事件处理

DatePicker.prototype.bindEvent = function() { var self = this; self.opts.container.on("change", ".year-select", function() { self.renderSelectedDate(); }); //选中月份 self.opts.container.on("change", ".month-select", function() { self.renderSelectedDate(); }); //下一月 self.opts.container.on("click", ".next-btn", function(e) { e.stopPropagation(); var cur_date =self.currentDate.setMonth(self.currentDate.getMonth()+1);; self.setCurrentDate(cur_date); }); //上一月 self.opts.container.on("click", ".prev-btn", function(e) { e.stopPropagation(); var cur_date = self.currentDate.setMonth(self.currentDate.getMonth()-1); self.setCurrentDate(cur_date); }); //选择日历中某一天 self.opts.container.on("click", ".date-item", function() { if (!$(this).hasClass("disabled")) { var _day = $(this).attr("date"); var cur_date = self.currentDate.setDate(_day); self.setCurrentDate(cur_date); } });};

定义临时存储的当前日期，默认日期是今天，但是选择的时候当前日期会变化。

//临时被选中的日期DatePicker.prototype.tempActiveDate=(function(){ var _date=new Date(); return { getDate: function() { return _date; }, setDate:function(date){ _date=new Date(date); } };})();

年月下拉框变化时更新日期

//设置下拉框选中的日期DatePicker.prototype.renderSelectedDate = function() { var _year = this.opts.container.find(".year-select").val(); var _month = this.opts.container.find(".month-select").val(); var _day = this.currentDate.getDate(); var cur_date = new Date(_year, _month, _day); this.setCurrentDate(cur_date);};

渲染日历框架，日历固定为42格，7列6行，星期从一到天

//渲染日历框架DatePicker.prototype.renderCalendar = function() { var calendar_header = this.renderHeader(); var calendar_days = '<table class="calendar-table"><thead><tr><th>日</th><th>一</th><th>二</th><th>三</th><th>四</th><th>五</th><th>六</th></tr></thead>'; var calendar_body = '<tbody class="calendar_body">'; for (var i = 0; i < 6; i++) { calendar_body += '<tr><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td></tr>'; } calendar_body + '</tbody></table>'; this.opts.container.html(calendar_header + calendar_days + calendar_body); this.renderCalendarData();};

渲染日历的头部，包括上月、下月按钮，年月的下拉框

//渲染日历头部DatePicker.prototype.renderHeader = function() { var _year = this.today.getFullYear(); var _month = this.today.getMonth() + 1; var current_year = this.currentDate.getFullYear(); var current_month = this.currentDate.getMonth(); var monthArr = ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"]; var min_year=(new Date(this.opts.min_date)).getFullYear();//最小年份 var start_year=current_year - this.opts.yearOffset>=min_year?current_year - this.opts.yearOffset:min_year;//下拉框起始年份 var yearSelect=""; //如果已经是最小日期，不显示上月按钮 if (current_year <= min_year && current_month <= 0) { yearSelect+='<select class="year-select">'; }else{ yearSelect = '<span class="prev-btn"><</span> <select class="year-select">'; } for (var i =start_year; i <= _year; i++) { if (i == current_year) { yearSelect += '<option value="' + i + '" selected>' + i + '</option>'; } else { yearSelect += '<option value="' + i + '">' + i + '</option>'; } } yearSelect += '</select>'; var monthSelect = '<select class="month-select">'; for (var i = 0; i < 12; i++) { var state=""; if (current_year < _year) { if (i == current_month) { state="selected"; } }else if (current_year == _year) { if(i==current_month){ state="selected"; }else{ state="disabled"; } }else{ state="disabled"; } monthSelect += '<option value="' + i + '" '+state+'>' + monthArr[i] + '月</option>'; } if (current_year >= _year && current_month+1 >= _month) { monthSelect += '</select>'; }else{ monthSelect += '</select><span class="next-btn">></span>'; } return "<div class='calendar_header'>" + yearSelect + monthSelect + "</div>";};//渲染日历数据DatePicker.prototype.renderCalendarData = function() { var self = this; var _year = this.currentDate.getFullYear(); //当前年 var _month = this.currentDate.getMonth() + 1; //当前月 var _firstDay = new Date(_year, _month - 1, 1); //当前月第一天 var tds = this.opts.container.find(".calendar_body td"); var header = self.renderHeader(); this.opts.container.find(".calendar_header").html(header); tds.each(function(index, item) { var _thisDate = new Date(_year, _month - 1, index + 1 - _firstDay.getDay()); var _thisDay = _thisDate.getDate(); var _thisMonth = _thisDate.getMonth() + 1; var _thisDateTime=_thisDate.getTime(); $(item).html(_thisDay).attr("date", _thisDay).removeClass("active").removeClass("disabled").removeClass("today"); //当前月并且当前选中日期高亮 if (_thisDay == self.tempActiveDate.getDate().getDate() && _thisMonth == _month) { $(item).addClass("active"); } //今天日期样式 if (_thisDay == self.todayDate) { $(item).addClass("today"); } //非当前月或者大于今天的日期禁用 if (_thisMonth !== _month || _thisDateTime>self.today.getTime()) { $(item).addClass("disabled").removeClass('active today'); } //如果选择的日期大于今天，则日期重置 if (_thisDateTime>self.today.getTime() && _thisDay == self.todayDate) { $(item).addClass("active"); self.currentDate = _thisDate; } });};//设置当前日期DatePicker.prototype.setCurrentDate = function(date) { this.tempActiveDate.setDate(date); this.currentDate = this.tempActiveDate.getDate(); this.renderCalendarData(); if(this.opts.updateCallback){ this.opts.updateCallback.call(null,this.currentDate); }};

js完整代码

function DatePicker() { this.opts = null; this.today = new Date(); //今天 this.todayDate=this.today.getDate(); this.currentDate = new Date(); //当前选中日期}DatePicker.prototype.init = function(opts) { var opts = $.extend({ 'min_date':"1970-01-01", "yearOffset": 20//默认往前推20年 }, opts || {}); this.opts = opts; this.renderCalendar(); this.bindEvent();};DatePicker.prototype.bindEvent = function() { var self = this; self.opts.container.on("change", ".year-select", function() { self.renderSelectedDate(); }); //选中月份 self.opts.container.on("change", ".month-select", function() { self.renderSelectedDate(); }); //下一月 self.opts.container.on("click", ".next-btn", function(e) { e.stopPropagation(); var cur_date =self.currentDate.setMonth(self.currentDate.getMonth()+1);; self.setCurrentDate(cur_date); }); //上一月 self.opts.container.on("click", ".prev-btn", function(e) { e.stopPropagation(); var cur_date = self.currentDate.setMonth(self.currentDate.getMonth()-1); self.setCurrentDate(cur_date); }); //选择日历中某一天 self.opts.container.on("click", ".date-item", function() { if (!$(this).hasClass("disabled")) { var _day = $(this).attr("date"); var cur_date = self.currentDate.setDate(_day); self.setCurrentDate(cur_date); } });};//临时被选中的日期DatePicker.prototype.tempActiveDate=(function(){ var _date=new Date(); return { getDate: function() { return _date; }, setDate:function(date){ _date=new Date(date); } };})();//设置下拉框选中的日期DatePicker.prototype.renderSelectedDate = function() { var _year = this.opts.container.find(".year-select").val(); var _month = this.opts.container.find(".month-select").val(); var _day = this.currentDate.getDate(); var cur_date = new Date(_year, _month, _day); this.setCurrentDate(cur_date);};//渲染日历框架DatePicker.prototype.renderCalendar = function() { var calendar_header = this.renderHeader(); var calendar_days = '<table class="calendar-table"><thead><tr><th>日</th><th>一</th><th>二</th><th>三</th><th>四</th><th>五</th><th>六</th></tr></thead>'; var calendar_body = '<tbody class="calendar_body">'; for (var i = 0; i < 6; i++) { calendar_body += '<tr><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td><td class="date-item"></td></tr>'; } calendar_body + '</tbody></table>'; this.opts.container.html(calendar_header + calendar_days + calendar_body); this.renderCalendarData();};//渲染日历头部DatePicker.prototype.renderHeader = function() { var _year = this.today.getFullYear(); var _month = this.today.getMonth() + 1; var current_year = this.currentDate.getFullYear(); var current_month = this.currentDate.getMonth(); var monthArr = ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"]; var min_year=(new Date(this.opts.min_date)).getFullYear();//最小年份 var start_year=current_year - this.opts.yearOffset>=min_year?current_year - this.opts.yearOffset:min_year;//下拉框起始年份 var yearSelect=""; //如果已经是最小日期，不显示上月按钮 if (current_year <= min_year && current_month <= 0) { yearSelect+='<select class="year-select">'; }else{ yearSelect = '<span class="prev-btn"><</span> <select class="year-select">'; } for (var i =start_year; i <= _year; i++) { if (i == current_year) { yearSelect += '<option value="' + i + '" selected>' + i + '</option>'; } else { yearSelect += '<option value="' + i + '">' + i + '</option>'; } } yearSelect += '</select>'; var monthSelect = '<select class="month-select">'; for (var i = 0; i < 12; i++) { var state=""; if (current_year < _year) { if (i == current_month) { state="selected"; } }else if (current_year == _year) { if(i==current_month){ state="selected"; }else{ state="disabled"; } }else{ state="disabled"; } monthSelect += '<option value="' + i + '" '+state+'>' + monthArr[i] + '月</option>'; } if (current_year >= _year && current_month+1 >= _month) { monthSelect += '</select>'; }else{ monthSelect += '</select><span class="next-btn">></span>'; } return "<div class='calendar_header'>" + yearSelect + monthSelect + "</div>";};//渲染日历数据DatePicker.prototype.renderCalendarData = function() { var self = this; var _year = this.currentDate.getFullYear(); //当前年 var _month = this.currentDate.getMonth() + 1; //当前月 var _firstDay = new Date(_year, _month - 1, 1); //当前月第一天 var tds = this.opts.container.find(".calendar_body td"); var header = self.renderHeader(); this.opts.container.find(".calendar_header").html(header); tds.each(function(index, item) { var _thisDate = new Date(_year, _month - 1, index + 1 - _firstDay.getDay()); var _thisDay = _thisDate.getDate(); var _thisMonth = _thisDate.getMonth() + 1; var _thisDateTime=_thisDate.getTime(); $(item).html(_thisDay).attr("date", _thisDay).removeClass("active").removeClass("disabled").removeClass("today"); //当前月并且当前选中日期高亮 if (_thisDay == self.tempActiveDate.getDate().getDate() && _thisMonth == _month) { $(item).addClass("active"); } //今天日期样式 if (_thisDay == self.todayDate) { $(item).addClass("today"); } //非当前月或者大于今天的日期禁用 if (_thisMonth !== _month || _thisDateTime>self.today.getTime()) { $(item).addClass("disabled").removeClass('active today'); } //如果选择的日期大于今天，则日期重置 if (_thisDateTime>self.today.getTime() && _thisDay == self.todayDate) { $(item).addClass("active"); self.currentDate = _thisDate; } });};//设置当前日期DatePicker.prototype.setCurrentDate = function(date) { this.tempActiveDate.setDate(date); this.currentDate = this.tempActiveDate.getDate(); this.renderCalendarData(); if(this.opts.updateCallback){ this.opts.updateCallback.call(null,this.currentDate); }};//日期段由两个单独日期实例组成function DateRangePicker() { this.start_picker = null; this.end_picker = null;}DateRangePicker.prototype.init = function(opts) { var self = this; this.opts = $.extend({ "pos":"left",//日历位置，靠左或靠右 "min_date":"1970-01-01",//最小日期 "updateDateFn":function(){//日期更新回调 } }, opts || {}); this.createCalendarWrap(); this.$wrap=this.opts.ele.parents(".ui-datepicker"); this.start_picker = new DatePicker(); this.end_picker = new DatePicker(); this.start_picker.init({ "container": this.$wrap.find(".calendar-container"), "min_date":self.opts.min_date, "yearOffset": 20, "updateCallback": function(){ self.updateDate(); } }); this.end_picker.init({ "container": this.$wrap.find(".calendar-container2"), "yearOffset": 20, "min_date":self.opts.min_date, "updateCallback": function(){ self.updateDate(); } }); this.bindEvent();};DateRangePicker.prototype.bindEvent = function() { var self = this; var start_picker = self.start_picker, end_picker = self.end_picker; this.opts.ele.on("focus",function(){ self.$wrap.find(".ui-daterangepicker-wrap").show(); }); $(".ui-daterangepicker-range").on("click", "[range-key]", function() { var _year = start_picker.currentDate.getFullYear(); var _month = start_picker.currentDate.getMonth(); var range = $(this).attr("range-key"); var start_day = start_picker.todayDate, end_day = end_picker.todayDate switch (range) { case "今日": start_day = new Date(moment()); break; case "昨日": start_day = new Date(moment().subtract(1, 'days')); break; case "最近7日": start_day = new Date(moment().subtract(6, 'days')); break; case "最近30日": start_day = new Date(moment().subtract(30, 'days')); break; } self.setDate(start_day,new Date()) $(this).addClass("active").siblings("[range-key]").removeClass("active"); }); $("html").on("click",function(e){ var $target=$(e.target); if($target.closest(".ui-daterangepicker-wrap").length==0&&$target[0]!=self.opts.ele[0]){ self.$wrap.find(".ui-daterangepicker-wrap").hide(); } });};DateRangePicker.prototype.updateDate = function() { var self = this; var start_date = moment(self.start_picker.currentDate).format(self.opts.format); var end_date = moment(self.end_picker.currentDate).format(self.opts.format); var start_date_time=new Date(self.start_picker.currentDate).getTime(); var end_date_time=new Date(self.end_picker.currentDate).getTime(); if(start_date_time>new Date().getTime()){ self.start_picker.setCurrentDate(new Date()); } if(end_date_time>new Date().getTime()){ self.end_picker.setCurrentDate(new Date()); } if(start_date_time>end_date_time){ self.opts.ele.val(end_date + "~" + start_date); }else{ self.opts.ele.val(start_date + "~" + end_date); } $(".ui-daterangepicker-range li").removeClass("active"); self.opts.updateDateFn.call(null,this.getDate());};//获取起始日期和结束日期段,起始日期若大于结束日期则互换DateRangePicker.prototype.getDate = function() { var start_date=Math.min(this.start_picker.currentDate.getTime(),this.end_picker.currentDate.getTime()); var end_date=Math.max(this.start_picker.currentDate.getTime(),this.end_picker.currentDate.getTime()); start_date=moment(start_date).format(this.opts.format); end_date=moment(end_date).format(this.opts.format); return { "start_date":start_date, "end_date": end_date };};//设置起始日期和结束日期DateRangePicker.prototype.setDate = function(start_date, end_date) { this.start_picker.setCurrentDate(new Date(start_date)); this.end_picker.setCurrentDate(new Date(end_date)); this.updateDate();};//创建日期段容器DateRangePicker.prototype.createCalendarWrap = function() { var $parent=this.opts.ele.parents(".ui-datepicker"); var h=$parent.height(),w=$parent.width(); var wrap = '<div class="ui-daterangepicker-wrap" style="top:'+h+'px;'+this.opts.pos+':0"><div class="ui-calendar"><p class="calendar-title">开始日期</p><div class="calendar-container"></div></div>' + '<div class="ui-calendar"><p class="calendar-title">结束日期</p><div class="calendar-container2"></div></div>' + '<div class="ui-daterangepicker-range"><ul>' + '<li range-key="今日">今日</li>' + '<li range-key="昨日">昨日</li>' + '<li range-key="最近7日">最近7日</li>' + '<li range-key="最近30日">最近30日</li>' + '</ul>' + '</div></div>'; $parent.append(wrap);};var daterangepicker = new DateRangePicker();daterangepicker.init({ "ele": $("#daterange"), "pos":"left", "min_date": "1990-01-01", "format": "YYYY:MM:DD", "updateDateFn":function(){ console.log(daterangepicker.getDate()) }});

HTML：

<div class="ui-datepicker"> <input type="text" id="daterange" placeholder="请选择日期"/></div>

CSS

* { margin: 0; padding: 0;}body{font:14px "微软雅黑";}li { list-style: none;}.ui-datepicker{ display: inline-block; position: relative;}.ui-calendar { margin: 10px; width: 260px;}.single-calendar{ border:1px solid #ccc; text-align: center; box-shadow: 0 0 3px rgba(0,0,0,0.25);}.ui-calendar select { padding: 3px 10px; margin: 0 10px;}.calendar_header { margin: 10px 0; text-align: center;}.calendar-table { border-collapse: collapse;}.calendar-table td { padding: 5px 10px; cursor: pointer; text-align: center; border-radius:3px;}.calendar-table td.today { color: #337ab7;}.calendar-table td.active { background: #337ab7; color:#fff;}.calendar-table td.disabled { color: #ccc; cursor: default;}.ui-calendar .next-btn,.ui-calendar .prev-btn { padding:1px 4px; border:1px solid transparent; border-radius:3px; font-weight: bold; cursor: pointer;}.ui-calendar .next-btn:hover,.ui-calendar .prev-btn:hover{ border-color:#ccc; box-shadow: 0 0 3px rgba(0,0,0,0.25);}.ui-daterangepicker-wrap { position: absolute; top:0; width: 740px; border: 1px solid #ccc; border-radius:3px; box-shadow: 0 0 3px rgba(0,0,0,0.25); background: #fff; overflow: hidden; z-index:1000; display: none;}.calendar-title{ text-align: center;}.ui-daterangepicker-wrap .ui-calendar { float: left;}.ui-daterangepicker-range{ width: 150px; float: right; margin: 10px;}.ui-daterangepicker-range ul{ margin-bottom:20px;}.ui-daterangepicker-range li { margin:5px 0; padding: 5px 10px; border-radius:3px; background: #f5f5f5; cursor: pointer;}.ui-daterangepicker-range li:hover,.ui-daterangepicker-range li.active { background: #337ab7; color:#fff;}.ui-daterangepicker-range .range-btn{ width:60px; height: 30px; margin-right: 10px; border:1px solid #e5e5e5; border-radius:3px; background: none; cursor: pointer;}.ui-daterangepicker-range .range-confirm{ background: #337ab7; border-color:#337ab7; color:#fff;}

以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持！