JS获取周、月、季度日期

效果：

代码：

//用于获取日期本周、本月、本季度的js
//Author : guanghe
//文件引用方法：<script src="${staticPath}/common/js/dateUtil.js"></script>
/**  5  * 获取本周、本季度、本月、上月的开始日期、结束日期  6  */
var now = new Date(); //当前日期
var nowDayOfWeek = now.getDay(); //今天本周的第几天
var nowDay = now.getDate(); //当前日
var nowMonth = now.getMonth(); //当前月
var nowYear = now.getYear(); //当前年
nowYear += (nowYear < 2000) ? 1900 : 0;  13 
//格式化日期：yyyy-MM-dd
function formatDate(date) {  16     var myyear = date.getFullYear();  17     var mymonth = date.getMonth() + 1;  18     var myweekday = date.getDate();  19     if (mymonth < 10) {  20         mymonth = "0" + mymonth;  21  }  22     if (myweekday < 10) {  23         myweekday = "0" + myweekday;  24  }  25     return (myyear + "-" + mymonth + "-" + myweekday);  26 }  27 
//获得某月的天数
function getMonthDays(theYear, theMonth) {  30     var monthStartDate = new Date(theYear, theMonth, 1);  31     var monthEndDate = new Date(theYear, theMonth + 1, 1);  32     var days = (monthEndDate - monthStartDate) / (1000 * 60 * 60 * 24);  33     return days;  34 }  35 
//获得本季度的开始月份
function getQuarterStartMonth(theMonth) {  38     if(!theMonth) {  39         theMonth = nowMonth;  40  }  41     var quarterStartMonth = 0;  42     if (theMonth < 3) {  43         quarterStartMonth = 0;  44  }  45     if (2 < theMonth && theMonth < 6) {  46         quarterStartMonth = 3;  47  }  48     if (5 < theMonth && theMonth < 9) {  49         quarterStartMonth = 6;  50  }  51     if (theMonth > 8) {  52         quarterStartMonth = 9;  53  }  54     return quarterStartMonth;  55 }  56 
//获得本周的开始日期
function ghGetWeekStartDate() {  59     var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek + 1);  60     return formatDate(weekStartDate);  61 }  62 //获得本周的结束日期
function ghGetWeekEndDate() {  64     var weekEndDate = new Date(nowYear, nowMonth, nowDay + (6 - nowDayOfWeek) + 1);  65     return formatDate(weekEndDate);  66 }  67 
//获得下周的开始日期
function ghGetNextWeekStartDate() {  70     var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek + 7 + 1);  71     return formatDate(weekStartDate);  72 }  73 
//获得本月的开始日期
function ghGetMonthStartDate() {  76     var monthStartDate = new Date(nowYear, nowMonth, 1);  77     return formatDate(monthStartDate);  78 }  79 
//获得本月的结束日期
function ghGetMonthEndDate() {  82     var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowYear, nowMonth));  83     return formatDate(monthEndDate);  84 }  85 
//获得下月开始时间
function ghGetNextMonthStartDate() {  88     var theYear = nowYear;  89     var theMonth = nowMonth + 1;  90     if(theMonth == 12) {  91         theYear += 1;  92         theMonth = 0;  93  }  94     var nextMonthStartDate = new Date(theYear, theMonth, 1);  95     return formatDate(nextMonthStartDate);  96 }  97 
//获得本季度的开始日期
function ghGetQuarterStartDate() { 100     var quarterStartDate = new Date(nowYear, getQuarterStartMonth(), 1); 101     return formatDate(quarterStartDate); 102 } 103 
//或的本季度的结束日期
function ghGetQuarterEndDate() { 106     var quarterEndMonth = getQuarterStartMonth() + 2; 107     var quarterStartDate = new Date(nowYear, quarterEndMonth, 108  getMonthDays(nowYear, quarterEndMonth)); 109     return formatDate(quarterStartDate); 110 } 111 
function ghGetNextQuarterStartDate() { 113     var theYear = nowYear; 114     var theQuarterMonth = nowMonth + 3; 115     if(theQuarterMonth > 11) { 116         theYear += 1; 117         theQuarterMonth -= 12; 118  } 119     var quarterStartDate = new Date(theYear, getQuarterStartMonth(theQuarterMonth), 1); 120     return formatDate(quarterStartDate); 121 } 122 
//设置查询时间
function ghSetDate(areaName, inputName, id) { 125     var date = $(areaName).children(inputName); 126     var dateStart = date.eq(0); 127     var dateEnd = date.eq(1); 128     switch(id) { 129         case "cur_week" : 130  dateStart.val(ghGetWeekStartDate()); 131  dateEnd.val(ghGetNextWeekStartDate()); 132             break; 133         case "cur_month" : 134  dateStart.val(ghGetMonthStartDate()); 135  dateEnd.val(ghGetNextMonthStartDate()); 136             break; 137         case "cur_quarter" : 138  dateStart.val(ghGetQuarterStartDate()); 139  dateEnd.val(ghGetNextQuarterStartDate()); 140             break; 141  } 142 } 143 
//初始化时间区域选择控件
// name：时间组件选择器name
function ghInitWidget(name) { 147     var areaName = "#" + name + "_date"; 148     var inputName = "input[name='" + name + "']"; 149     var str = $("<label id='theLabel' class='control-label'><a id='cur_week'>本周</a>&emsp;<a id='cur_month'>本月</a>&emsp;<a id='cur_quarter'>本季度</a>&emsp;自定义&emsp;</label>"); 150  $(areaName).before(str); 151     //点击区域按钮，高亮并搜索
    $("#theLabel a").click(function() { 153         $("#theLabel a").css("color", "#337ab7"); 154         $(this).css("color", "red"); 155         ghSetDate(areaName, inputName, this.id); 156         $(":button.btn-search1").click(); 157  }); 158     //点击日期框，区域选择按钮取消高亮
    $(areaName).children(inputName).click(function() { 160         $("#theLabel a").css("color", "#337ab7"); 161  }); 162 }