代码语言：javascript复制
/**
* 获取上周、本周、上月、本月、上季度、本季度的开始日期、结束日期 start
* 亲测无bug。获取上月开始结束日期考虑了年份的变化
*/
var now = new Date(); //当前日期
var nowDayOfWeek = now.getDay()-1; //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; //
var lastMonthDate = new Date(); //上月日期
lastMonthDate.setDate(1);
lastMonthDate.setMonth(lastMonthDate.getMonth() - 1);
var lastYear = lastMonthDate.getYear();
var lastMonth = lastMonthDate.getMonth();
//格式化日期：yyyy-MM-dd
function formatDate(date) {
var myyear = date.getFullYear();
var mymonth = date.getMonth() 1;
var myweekday = date.getDate();
if (mymonth < 10) {
mymonth = "0" mymonth;
}
if (myweekday < 10) {
myweekday = "0" myweekday;
}
return (myyear "-" mymonth "-" myweekday);
}
//获得某月的天数
function getMonthDays(myMonth) {
var monthStartDate = new Date(nowYear, myMonth, 1);
var monthEndDate = new Date(nowYear, myMonth 1, 1);
var days = (monthEndDate - monthStartDate) / (1000 * 60 * 60 * 24);
return days;
}
//获得本季度的开始月份
function getQuarterStartMonth() {
var quarterStartMonth = 0;
if (nowMonth < 3) {
quarterStartMonth = 0;
}
if (2 < nowMonth && nowMonth < 6) {
quarterStartMonth = 3;
}
if (5 < nowMonth && nowMonth < 9) {
quarterStartMonth = 6;
}
if (nowMonth > 8) {
quarterStartMonth = 9;
}
return quarterStartMonth;
}
//获得本周的开始日期
function getWeekStartDate() {
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek);
return formatDate(weekStartDate);
}
//获得本周的结束日期
function getWeekEndDate() {
var weekEndDate = new Date(nowYear, nowMonth, nowDay (6 - nowDayOfWeek));
return formatDate(weekEndDate);
}
//获得上周的开始日期
function getLastWeekStartDate() {
var weekStartDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek - 7);
return formatDate(weekStartDate);
}
//获得上周的结束日期
function getLastWeekEndDate() {
var weekEndDate = new Date(nowYear, nowMonth, nowDay - nowDayOfWeek - 1);
return formatDate(weekEndDate);
}
//获得本月的开始日期
function getMonthStartDate() {
var monthStartDate = new Date(nowYear, nowMonth, 1);
return formatDate(monthStartDate);
}
//获得本月的结束日期
function getMonthEndDate() {
var monthEndDate = new Date(nowYear, nowMonth, getMonthDays(nowMonth));
return formatDate(monthEndDate);
}
//获得上月开始时间
function getLastMonthStartDate() {
if(lastMonth==11){
var lastMonthStartDate = new Date(nowYear-1, lastMonth, 1);
}else{
var lastMonthStartDate = new Date(nowYear, lastMonth, 1);
}
return formatDate(lastMonthStartDate);
}
//获得上月结束时间
function getLastMonthEndDate() {
if(lastMonth==11){
var lastMonthEndDate = new Date(nowYear-1, lastMonth, getMonthDays(lastMonth));
}else{
var lastMonthEndDate = new Date(nowYear, lastMonth, getMonthDays(lastMonth));
}
return formatDate(lastMonthEndDate);
}
//获得本季度的开始日期
function getQuarterStartDate() {
var quarterStartDate = new Date(nowYear, getQuarterStartMonth(), 1);
return formatDate(quarterStartDate);
}
//获得本季度的结束日期
function getQuarterEndDate() {
var quarterEndMonth = getQuarterStartMonth() 2;
var quarterStartDate = new Date(nowYear, quarterEndMonth,
getMonthDays(quarterEndMonth));
return formatDate(quarterStartDate);
}
/**
* 获取时间 end
*/
