注释掉的是默认的css样式，你可以修改成自己的样式实现另一个风格，大家参考使用吧

复制代码 代码如下:
/**
* jQuery Calendar Plugin
*/
(function($, window) {

'use strict';
$.fn.calendar = function(options) {
//check is select, if nothing select, return this
if (!this.length) {
if (options && options.debug && window.console) {
console.log("nothing select");
}
return this;
}
var self = $(this);

// default parameter setting
var defaults = {
cssPath: '', //user-define loading path of css file
eventName: 'click', //user-define the event name that triggers the control
onSelectDate: null, //callback function after select date
autoClose: false
};

//inherit user-defined parameter
defaults = $.extend(defaults, options);

//default as data of the day
var d_date = new Date();
var _date = {
year: d_date.getFullYear(),
month: d_date.getMonth() + 1,
day: d_date.getDate(),
week: d_date.getDay()
};

//default template of plugin
var calendarDiv = '<div id="calendar" class="cld_grid" style="display:none;z-index:100;">';
calendarDiv += '<div id="calendar_year_month" class="cld_year_month" style="position:relative;">';
calendarDiv += '<div id="last-year" style="position:absolute;left:30px;"><</div>';
calendarDiv += '<div id="last-month" style="position:absolute;left:60px;"><<</div>';
calendarDiv += '<div id="next-year" style="position:absolute;right:30px;">></div>';
calendarDiv += '<div id="next-month" style="position:absolute;right:60px;">>></div>';
calendarDiv += '<input style="width:40px;text-align:center;" type="text" id="calendar_year" value="' + _date.year + '">-<input style="width:25px;text-align:center;" type="text" id="calendar_month" value="' + _date.month + '"></div>'
calendarDiv += '<div id="calendar_week_box" class="cld_week_box clearfix">';
calendarDiv += '<div class="header-day" data-index = "0">日</div>';
calendarDiv += '<div class="header-day" data-index = "1">一</div>';
calendarDiv += '<div class="header-day" data-index = "2">二</div>';
calendarDiv += '<div class="header-day" data-index = "3">三</div>';
calendarDiv += '<div class="header-day" data-index = "4">四</div>';
calendarDiv += '<div class="header-day" data-index = "5">五</div>';
calendarDiv += '<div class="header-day" data-index = "6">六</div>';
calendarDiv += '</div>';
calendarDiv += '<div class="days clearfix">';
for (var k = 0; k < 35; k++) {
calendarDiv += '<div class="day"><span class="day-number">' + '' + '</span></div>';
}
calendarDiv += '</div></div>';

var calendarAction = {
//initialization
initAction: function() {
calendarAction.thisClick();
calendarAction.inputChange();
calendarAction.buttonChange();
calendarAction.chooseDate();
},

//click to display
thisClick: function() {
self.bind(defaults.eventName, function(e) {
calendarAction.showCalendar();
});
},

//when year and month in the input box changes
inputChange: function() {
$('#calendar_year, #calendar_month').bind('change', function() {
var year = $('#calendar_year').val(),
month = $('#calendar_month').val();
if (!/^\d{4}$/.test(year)) {
alert('please input four-digit year');
return false;
}
if (!/^\d{1,2}$/.test(month) || (month > 12 || month <= 0)) {
alert('please input proper month');
return false;
}
//Initialize after year and month changes
init_day_numbers(year, month);
});
},

//click to change year and month
buttonChange: function() {
$('#last-year').bind('click', function() {
var lastYear = parseInt($('#calendar_year').val()) - 1 > 0 ? parseInt($('#calendar_year').val()) - 1 : 1;
$('#calendar_year').val(lastYear);
init_day_numbers(lastYear, $('#calendar_month').val());
});

$('#last-month').bind('click', function() {
var lastMonth = parseInt($('#calendar_month').val()) - 1 > 0 ? parseInt($('#calendar_month').val()) - 1 : 12,
thisYear = lastMonth == 12 ? parseInt($('#calendar_year').val()) - 1 : $('#calendar_year').val();
$('#calendar_month').val(lastMonth);
$('#calendar_year').val(thisYear);
init_day_numbers(thisYear, lastMonth);
});

$('#next-year').bind('click', function() {
var nextYear = parseInt($('#calendar_year').val()) + 1;
$('#calendar_year').val(nextYear);
init_day_numbers(nextYear, $('#calendar_month').val());
});

$('#next-month').bind('click', function() {
var nextMonth = parseInt($('#calendar_month').val()) + 1 <= 12 ? parseInt($('#calendar_month').val()) + 1 : 1,
thisYear = nextMonth == 1 ? parseInt($('#calendar_year').val()) + 1 : $('#calendar_year').val();
$('#calendar_month').val(nextMonth);
$('#calendar_year').val(thisYear);
init_day_numbers(thisYear, nextMonth);
});
},

//set the relative offset between control and webpage, then display
showCalendar: function() {
var o_x = self.offset().left,
o_y = self.offset().top + self[0].offsetHeight;
$('#calendar').css({
'position': 'absolute',
'left': o_x,
'top': o_y,
'display': 'block'
});
},

//close plugin
closeCalendar: function() {
$('#calendar').hide();
},

//select date
chooseDate: function() {
$('.day').live('click', function() {
var _date = $(this).attr('data-date');
//trigger callback function
if ($.isFunction(defaults.onSelectDate)) {
defaults.onSelectDate.call(this, _date);
}
if (defaults.autoClose) {
calendarAction.closeCalendar();
}
});
}
};

//write calendar template in webpage
$('body').append(calendarDiv);

//initialize the year, month, day of calendar list
init_day_numbers(_date.year, _date.month);

//initialize plugin action
calendarAction.initAction();

function init_day_numbers(year, month) {
var maxday = getmaxDay(year, month),
firstWeek,beforeNumber,
startIndex = beforeNumber = firstWeek = getFirstWeek(year, month),
afterNumber = 35 - maxday - beforeNumber,
lastMonthMaxDay = getMaxDayByLastMonth(year, month),
nextMonthMaxDay = getMaxDayByNextMonth(year, month),
Edge = getLastAndNextDate(year, month);
var default_html = '';
for (var k = 0; k < 35; k++) {
default_html += '<div class="day"><span class="day-number">' + '' + '</span></div>';
};
$('.days').html(default_html);
for (var s = 1; s <= maxday; s++) {
$('.day-number').eq(startIndex).text(s);
$('.day').eq(startIndex).attr('data-date', year + '-' + month + '-' + s);
if (s == _date.day && year == _date.year && month == _date.month) {
$('.day').eq(startIndex).addClass('today');
}
startIndex++;
};
for (var k = 0; k < beforeNumber; k++) {
var realDay = lastMonthMaxDay - beforeNumber + k + 1;
$('.day-number').eq(k).text(realDay);
$('.day-number').eq(k).addClass('last-month');
$('.day').eq(k).attr('data-date', Edge.lastY + '-' + Edge.lastM + '-' + realDay);
};
for (var l = 1; l <= afterNumber; l++) {
var _index = beforeNumber + maxday + (l - 1);
$('.day-number').eq(_index).text(l);
$('.day-number').eq(_index).addClass('next-month');
$('.day').eq(_index).attr('data-date', Edge.nextY + '-' + Edge.nextM + '-' + l);
}
}

function getLastAndNextDate(year, month) {
var lastM = month - 1 > 0 ? month - 1 : 12,
lastY = lastM == 12 ? year - 1 : year,
nextM = month + 1 > 12 ? 1 : month + 1,
nextY = nextM == 1 ? year + 1 : year;
return {
lastM: lastM,
lastY: lastY,
nextM: nextM,
nextY: nextY
};
}

//obtain what the first day of one month is in a week
function getFirstWeek(year, month) {
var date = new Date(year, month - 1, 1);
return date.getDay();
}

//obtain the year, month, day of today
function getToday() {
var date = new Date();
return today = [date.getFullYear(), date.getMonth() + 1, date.getDate(), date.getDay()];
}

//obtain the number of days for a month
function getmaxDay(year, month) {
var date = new Date(year, month, 0);
return date.getDate();
}

//obtain the number of days for last month
function getMaxDayByLastMonth(year, month) {
month = month - 1 <= 0 ? 12 : month - 1;
year = month == 12 ? year - 1 : year;
return getmaxDay(year, month);
}

//obtain the number of days for next month
function getMaxDayByNextMonth(year, month) {
month = month + 1 > 12 ? 1 : month + 1;
year = month == 1 ? year + 1 : year;
return getmaxDay(year, month);
}

//obtain the days list of a certain year and month, return array
function getDayList(year, month) {
var _list = [],
maxday = getmaxDay(year, month),
month = month - 1;
for (var i = 1; i <= maxday; i++) {
var d = new Date(year, month, i);
_list[i - 1] = d.getDay();
}
return _list;
}
}
})(jQuery, window);

/*
<style type="text/css">
*{margin:0;padding:0;font-size:12px;font-family: Inconsolata, Monaco, 'Andale Mono', Courier;}
.cld_grid{width:300px;margin:auto;}
.cld_week_box{background-color:#3883a3;width:100%;}
.header-day{float: left;padding: 10px 0px;width: 14.2857%;text-align: center;color: white;font-family:'微软雅黑'}
.clearfix:after{content: ".";display: block;clear: both;visibility: hidden;line-height: 0;height: 0;}
.day{float: left;
width: 14.2857%;
height: 13px;
padding: 10px 0;
text-align: center;
color: #4f4f4f;
background-color: #ebebeb;
border-bottom: 2px solid white;
background-image: url('http://kylestetz.github.io/CLNDR/css/./triangle.svg');
background-size: cover;
background-position: center;
cursor: pointer;
}
.days .last-month, .days .next-month {
opacity: 0.3;
}
.days .today{
background:#fff;
}
.cld_year_month{
padding: 10px;
background-color: #71bbd2;
text-align: center;
color: white;
letter-spacing: 1px;
font-size:14px;
}
.cld_year_month div{cursor:pointer;}
</style>
*/