获取今天，昨天，本周，上周，本月，上月时间（实例分享）

话不多说，请看代码：

//获取今天
var nowdate= new date(); //当天日期
console.log(nowdate);
//今天是本周的第几天
var nowdayofweek= nowdate.getday();
console.log(nowdayofweek);
//当前日
var nowday = nowdate.getdate();
console.log(nowday);
//当前月
var nowmonth = nowdate.getmonth();
console.log(nowmonth);
//当前年
var nowyear = nowdate.getfullyear();
console.log(nowyear);
//var nowhours = nowdate.gethours();
//var nowminutes = nowdate.getminutes();
//var nowseconds = nowdate.getseconds();
nowyear += (nowyear < 2000) ? 1900 : 0; //
console.log(nowyear);
var lastmonthdate = new date(); //上月日期
console.log(lastmonthdate);
lastmonthdate.setdate(1);
console.log(lastmonthdate.setdate(1));
lastmonthdate.setmonth(lastmonthdate.getmonth()-1);
console.log(lastmonthdate.setmonth(lastmonthdate.getmonth()-1));
var lastyear = lastmonthdate.getyear();
console.log(lastyear);
var lastmonth = lastmonthdate.getmonth();
console.log(lastmonth);
//格式化日期：yyyy-mm-dd
function formatdate(date) {
 var myyear = date.getfullyear();
 var mymonth = date.getmonth()+1;
 var myweekday = date.getdate();
 //var myhours = date.gethours();
 //var myminutes = date.getminutes();
 //var myseconds = date.getseconds();
 if(mymonth < 10){
 mymonth = "0" + mymonth;
 }
 if(myweekday < 10){
 myweekday = "0" + myweekday;
 }
 //if(myhours < 10){
 // myhours = "0" + myhours;
 //}
 //if(myminutes < 10){
 // myminutes = "0" + myminutes;
 //}
 return (myyear+"/"+mymonth + "/" + myweekday);
 //return (myyear+"/"+mymonth + "/" + myweekday + " " + myhours+ ":" + myminutes);
}
//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<6){
// quarterstartmonth = 3;
// }
// if(5<9){
// quarterstartmonth = 6;
// }
// if(nowmonth>8){
// quarterstartmonth = 9;
// }
// return quarterstartmonth;
//}
//今天
$scope.today = function(){
 var getcurrentdate = new date();
 var getcurrentdate = formatdate(getcurrentdate);
 $scope.today = getcurrentdate;
 console.log($scope.today);
 $("#jquerypickertime3").val($scope.today);
 $("#jquerypickertime4").val($scope.today);
};
//昨天
$scope.yesterday = function(){
 var getyesterdaydate = new date(nowyear, nowmonth, nowday - 1);
 var getyesterdaydate = formatdate(getyesterdaydate);
 $scope.yestday = getyesterdaydate;
 console.log(getyesterdaydate);
 $("#jquerypickertime3").val($scope.yestday);
 $("#jquerypickertime4").val($scope.yestday);
};
//获得本周的开始日期
$scope.thisweek = function(){
 var getweekstartdate = new date(nowyear, nowmonth, nowday - nowdayofweek);
 var getweekstartdate = formatdate(getweekstartdate);
 $scope.tswkstart = getweekstartdate;
 console.log($scope.tswkstart);
 $("#jquerypickertime3").val($scope.tswkstart);
 //获得本周的结束日期
 var getweekenddate = new date(nowyear, nowmonth, nowday + (6 - nowdayofweek));
 var getweekenddate = formatdate(getweekenddate);
 $scope.tswkend = getweekenddate;
 console.log($scope.tswkend);
 $("#jquerypickertime4").val($scope.tswkend);
};
$scope.lastweek = function(){
 //获得上周的开始日期
 var getupweekstartdate = new date(nowyear, nowmonth, nowday - nowdayofweek -7);
 var getupweekstartdate = formatdate(getupweekstartdate);
 $scope.startlastweek = getupweekstartdate;
 console.log($scope.startlastweek);
 $("#jquerypickertime3").val($scope.startlastweek);
 //获得上周的结束日期
 var getupweekenddate = new date(nowyear, nowmonth, nowday + (6 - nowdayofweek - 7));
 var getupweekenddate = formatdate(getupweekenddate);
 $scope.endlastweek = getupweekenddate;
 console.log($scope.endlastweek);
 $("#jquerypickertime4").val($scope.endlastweek);
};
//本月
$scope.thismonth = function(){
 //获得本月的开始日期
 var getmonthstartdate = new date(nowyear, nowmonth, 1);
 var getmonthstartdate = formatdate(getmonthstartdate);
 $scope.startthismonth = getmonthstartdate;
 console.log($scope.startthismonth);
 $("#jquerypickertime3").val($scope.startthismonth);
 //获得本月的结束日期
 var getmonthenddate = new date(nowyear, nowmonth, getmonthdays(nowmonth));
 var getmonthenddate = formatdate(getmonthenddate);
 $scope.endthismonth = getmonthenddate;
 console.log($scope.endthismonth);
 $("#jquerypickertime4").val($scope.endthismonth);
};
//上月
$scope.lastmonth = function(){
 //获得上月开始时间
 var getlastmonthstartdate = new date(nowyear, lastmonth+1, 1);
 var getlastmonthstartdate = formatdate(getlastmonthstartdate);
 $scope.startlastmonth = getlastmonthstartdate;
 console.log($scope.startlastmonth);
 $("#jquerypickertime3").val($scope.startlastmonth);
 //获得上月结束时间
 var getlastmonthenddate = new date(nowyear, lastmonth+1, getmonthdays(lastmonth+1));
 var getlastmonthenddate = formatdate(getlastmonthenddate);
 $scope.endlastmonth = getlastmonthenddate;
 console.log($scope.endlastmonth);
 $("#jquerypickertime4").val($scope.endthismonth);
};

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！