这篇文章主要介绍js如何实现前端日历控件，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
首先说下控件的依赖包，加载控件的时候必须先加载jQuery, jQuqery.UI, 另外jquery-ui.css
这个包也需要引用，此包主要应用了jQuery拖拽和放缩的样式，控件样式方面大家自由发挥，给了个自己写的默认样式包 (献丑了)。
控件本身支持颜色自定义，可根据日期自定义日历上某日的颜色，另外可悬浮，拖拽，自由变形算是卖点吧，哈哈
控件包加载是这样的：
<link href="../../Content/themes/base/jquery-ui.css" rel="stylesheet" />
<link href="../../Content/datePrinter.css" rel="stylesheet" />
<script src="../../Scripts/default/jquery-ui-1.8.20.min.js"></script>
<script src="../../Scripts/control/datePrinter.js"></script>控件中的核心部分就是打印选中月的日历，是参考网上的代码，偷懒嘛，欢迎认领
例如页面代码如下：
<input type="text" id="datepickerInput"/>
调用的写法：
var dpCon = $("#datepickerInput").datePrinter({
initDate: "2017-4-5", //初始化日期
language: "EN", //语言
resizable: true, //可自由变形
draggable: true, //可悬浮拖拽
showYearAndMonth: true, //是否显示年月下拉框
getColor: getColor, //自定义颜色接口
chooseDone: chooseDone //选中日历某日执行事件接口
});
//选中日期时让日历消失 当然此处可以执行比较复杂的业务，如服务器数据请求
function chooseDone(date) {
dpCon.datePrinter("dpHide");
}
//自定义日期颜色
function getColor(day){
if(day == 3 || day==7 || day==15)
return "dpdisabled";
else if(day== 5 || day==18 || day==23)
return "dpyellow";
else
return "dpenable";
}
//获取当前选中的日期 调用控件提供的API getSelectDate
dpCon.datePrinter("getSelectDate");这样子就给上面的input text控件注册了一个日历控件，在点击input时，日历就会浮出，效果如下
你可能注意到右下角的小三角了，鼠标放上去之后可以随意变化日历的长宽，另外在日历上按住鼠标左键可以随意移动日期控件的位置，不挤占页面位置
下面这段是打印日历的代码，供参考：
//默认获取当前日期
var today = option.initDate ? option.initDate : new Date();
this.options.initDate = today;
//获取日期中的年份
var y = today.getFullYear(),
//获取日期中的月份(需要注意的是：月份是从0开始计算，获取的值比正常月份的值少1)
m = today.getMonth(),
//获取日期中的日(方便在建立日期表格时高亮显示当天)
d = today.getDate(),
//获取当月的第一天
firstday = new Date(y, m, 1),
//判断第一天是星期几(返回[0-6]中的一个，0代表星期天，1代表星期一，以此类推)
dayOfWeek = firstday.getDay() == 0 ? 7 : firstday.getDay(),
//创建月份数组
days_per_month = new Array(31, 28 + self._isLeap(y), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31),
//确定日期表格所需的行数
str_nums = Math.ceil((dayOfWeek + days_per_month[m] - 1) / 7);
//二维数组创建日期表格
for (i = 0; i < str_nums; i += 1) {
var tr = '<tr>';
for (k = 0; k < 7; k++) {
//为每个表格创建索引,从0开始
var idx = 7 * i + k;
//将当月的1号与星期进行匹配
var day = idx - dayOfWeek +2;
var styleName = self._getColor(day);
if (option.getColor && typeof (option.getColor) == 'function')
styleName = option.getColor(day);
styleName += " dateTD";
(day <= 0 || day > days_per_month[m]) ?
//索引小于等于0或者大于月份最大值就用空表格代替
(day = ' ', styleName = "dpBlank") : (day = idx - dayOfWeek + 2);
day == d ? tr += '<td class="' + styleName + ' today">' + day + '</td>' :
//高亮显示当天
tr += '<td class="' + styleName + '">' + day + '</td>';
}
tr += '</tr>';
self._dpTable.append(tr);
tr = "";
}以前都是写后台，玩前端的时间不长，有不对的地方欢迎指正
datePrinter.js的全部代码如下：
var _datePrinter_tmpl_CN = "<tr><th>一</th><th>二</th><th>三</th><th>四</th><th>五</th><th>六</th><th>日</th></tr>";
var _datePrinter_tmpl_EN = "<tr><th>Mon</th><th>Tue</th><th>Wed</th><th>Thu</th><th>Fri</th><th>Sat</th><th>Sun</th></tr>";
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;
}
$.widget("ui.datePrinter", {
options: {
initDate: null,
language: null, // CN,EN
resizable: false,
draggable: false,
width: "240px",
dateFormat:'yyyy/MM/dd',
getColor: null, //自定义颜色
showYearAndMonth: false,
chooseDone: function (selectDate) { return selectDate }, //选中日期后执行的自定义事件
autoId:null //控件Id
},
_dpTable: null,
_dpRoot:null,
_selectDate:null, //选中日期
_create: function () {
var self = this, option = this.options, ele = this.element;
$(ele).after("<div class='dpRoot'></div>");
self._dpRoot = $(ele).parent().find('div.dpRoot');
self._dpRoot.empty();
self._dpRoot.append("<div class='dpTitle' style='text-align:right;background-color:#e8edf4; width:" + option.width +
"'><select class='selYear'></select><select class='selMonth'></select><a style='color:#000;text-decoration:none;font-size:18px;padding-left:10px; padding-right:10px;width:10px;' href='javascript:void(0);'>x</a></div>");
self._dpRoot.append("<table style='width:" + option.width + "' cellspacing='0'></table>");
option.autoId = self._newGuid();
},
_init: function () {
var self = this, option = this.options, ele = this.element;
if (option.initDate && typeof option.initDate == 'string')
option.initDate = new Date(option.initDate.replace("-", "/"));
//初始化日历
self._initDate();
//点击事件
self._dpTable.delegate("td", "click", function () {
if (!$(this).hasClass("dpBlank")) {
self._dpTable.find("td").removeClass("today");
$(this).addClass("today");
//控件设置值
$.proxy(self._setDate($(this).text()), self);
if (option.chooseDone && typeof (option.chooseDone) == 'function')
$.proxy(option.chooseDone(self._selectDate), self);
}
});
if (option.resizable)
self._dpRoot.resizable({
minHeight: self._dpRoot.css("height").replace("px",''),
minWidth:option.width.replace("px",''),
resize: function (event, ui) {
var titleHeight = self._dpRoot.find("div.dpTitle").css("height").replace("px", "");
//最小值时不再缩小
if (ui.size.width >= Number(option.width.replace("px",''))) {
$(ui.element).find("table").css({ "width": ui.size.width, "height": ui.size.height - titleHeight, "text-align": "center" });
$(ui.element).find("div.dpTitle").css({ "width": ui.size.width });
}
}
});
if(option.draggable)
self._dpRoot.draggable();
//关闭按钮事件
self._dpRoot.find("div.dpTitle > a").bind("click", function () {
$.proxy(self.dpHide(), self);
});
if (option.showYearAndMonth) {
self._initSelYear();
self._initSelMonth();
}
$(ele).focus(function () {
self.dpShow();
});
$(ele).click(function () {
self.dpShow();
});
//$(ele).blur(function (e) {
// if ($(e.target).closest('div.dpRoot').length == 0) {
// self.dpHide();
// }
//});
},
_destroy: function () {
var self = this, option = this.options, ele = this.element;
self._dpRoot.empty();
this._prototype._destroy.call(self);
},
_getColor: function (date) {
var styleName = null;
if (date == 3 || date == 5 || date == 12)
styleName = "dpdisabled";
else if (date == 20 || date == 23 || date == 27)
styleName = "dpyellow";
else
styleName = "dpenable";
return styleName;
},
_initSelYear: function () {
var self = this, option = this.options, ele = this.element;
//根据初始化设置时间计算
var today = option.initDate ? option.initDate : new Date();
this.options.initDate = today;
var y = today.getFullYear(),
m = today.getMonth();
//打印年 + - 10
for (var i = 0; i < 20; i++) {
var varSel = (y == (y + i - 10)) ? "selected='selected'" : "";
self._dpRoot.find("select.selYear").show().append("<option value='" + (y + i - 10) + "' " + varSel + ">" + (y + i - 10) + "</option");
}
//年事件
self._dpRoot.find("select.selYear").bind("change", function () {
option.initDate = new Date(option.initDate.setYear($(this).val()));
self._initDate();
});
},
_initSelMonth: function () {
var self = this, option = this.options, ele = this.element;
//根据初始化设置时间计算
var today = option.initDate ? option.initDate : new Date();
this.options.initDate = today;
var y = today.getFullYear(),
m = today.getMonth();
//打印月
for (var i = 0; i < 12; i++) {
var varSel = (m == i) ? "selected='selected'" : "";
self._dpRoot.find("select.selMonth").show().append("<option value='" + (i + 1) + "' " + varSel + ">" + (i + 1) + "</option");
}
//月事件
self._dpRoot.find("select.selMonth").bind("change", function () {
var selMon = Number($(this).val()) - 1;
option.initDate = new Date(option.initDate.setMonth(selMon));
self._initDate();
});
},
_initDate: function () {
var self = this, option = this.options, ele = this.element;
self._dpTable = self._dpRoot.find("table");
self._dpTable.empty();
if (option.language == "EN") {
self._dpTable.wrapInner(_datePrinter_tmpl_EN);
}
//默认获取当前日期
var today = option.initDate ? option.initDate : new Date();
this.options.initDate = today;
//获取日期中的年份
var y = today.getFullYear(),
//获取日期中的月份(需要注意的是：月份是从0开始计算，获取的值比正常月份的值少1)
m = today.getMonth(),
//获取日期中的日(方便在建立日期表格时高亮显示当天)
d = today.getDate(),
//获取当月的第一天
firstday = new Date(y, m, 1),
//判断第一天是星期几(返回[0-6]中的一个，0代表星期天，1代表星期一，以此类推)
dayOfWeek = firstday.getDay() == 0 ? 7 : firstday.getDay(),
//创建月份数组
days_per_month = new Array(31, 28 + self._isLeap(y), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31),
//确定日期表格所需的行数
str_nums = Math.ceil((dayOfWeek + days_per_month[m] - 1) / 7);
//二维数组创建日期表格
for (i = 0; i < str_nums; i += 1) {
var tr = '<tr>';
for (k = 0; k < 7; k++) {
//为每个表格创建索引,从0开始
var idx = 7 * i + k;
//将当月的1号与星期进行匹配
var day = idx - dayOfWeek +2;
var styleName = self._getColor(day);
if (option.getColor && typeof (option.getColor) == 'function')
styleName = option.getColor(day);
styleName += " dateTD";
(day <= 0 || day > days_per_month[m]) ?
//索引小于等于0或者大于月份最大值就用空表格代替
(day = ' ', styleName = "dpBlank") : (day = idx - dayOfWeek + 2);
day == d ? tr += '<td class="' + styleName + ' today">' + day + '</td>' :
//高亮显示当天
tr += '<td class="' + styleName + '">' + day + '</td>';
}
tr += '</tr>';
self._dpTable.append(tr);
tr = "";
}
},
_isLeap: function (year) {
var self = this, option = this.options, ele = this.element;
return year % 4 == 0 ? (year % 100 != 0 ? 1 : (year % 400 == 0 ? 1 : 0)) : 0;
},
//选中日期时设置选中值 day为currentDate当月的第几日
_setDate: function (day) {
var self = this, option = this.options, ele = this.element;
self._selectDate = new Date(option.initDate.getFullYear() + '/' + (option.initDate.getMonth() + 1) + '/' + day);
//设置输入框值
$(ele).val(self.getSelectDate(), self);
},
//获取所选日期
getSelectDate: function () {
var self = this, option = this.options, ele = this.element;
return self._selectDate.Format(option.dateFormat);
},
//显示
dpShow: function () {
var self = this, option = this.options, ele = this.element;
self._dpRoot.show();
},
//隐藏
dpHide: function () {
var self = this, option = this.options, ele = this.element;
self._dpRoot.hide();
},
//new Guid
_newGuid: function () {
var guid = "";
for (var i = 1; i <= 32; i++) {
var n = Math.floor(Math.random() * 16.0).toString(16);
guid += n;
if ((i == 8) || (i == 12) || (i == 16) || (i == 20)) {
//guid += "-";
}
}
return guid;
}
});样式本人是业余的，勉强看看吧，由于datePrinter.js有依赖css的class名称，贴出来datePrinter.css文件代码如下
.dpBlank {
background-color: white;
cursor: not-allowed;
}
.dpRoot {
width: 240px;
position:absolute;
display:none;
}
.today {
border: 2px double #FF9900 !important;
}
.dpenable {
background-color: #AABBFF;
}
.dpyellow {
background-color: #FFC266;
}
.dpdisabled {
background-color: #B0AEA4;
}
.dpRoot table {
font-size: 13px;
width: inherit;
}
.dpRoot table th {
font-size: 12px;
border: solid 2px #e8eef4;
padding: 2px 3px;
background-color: #e8eef4;
border-collapse:initial;
text-align: center;
width: 22px;
}
.dpRoot table td {
color: white;
padding: 4px 5px;
border: solid 2px #e8eef4;
}
.dpTitle {
padding: 3px 0 0 0;
}
.dateTD {
cursor: pointer;
}
.selYear {
margin-right: 5%;
display: none;
font-size:14px;
}
.selMonth {
margin-right: 5%;
display: none;
font-size:14px;
}以上是“js如何实现前端日历控件”这篇文章的所有内容，感谢各位的阅读！希望分享的内容对大家有帮助，更多相关知识，欢迎关注编程网行业资讯频道！
