本日时间
showToDay()函数
{
var Nowdate=new日期();
M=号(Nowdate.getMonth ()) + 1
警报(Nowdate.getMonth() +“月”+ Nowdate.getDate() +”号,星期”+ Nowdate.getDay ());
返回Nowdate.getYear () +“-”+ M +“-”+ Nowdate.getDate ();
}
昨天
showTomorrow()函数
{
汤姆var=new日期();
tom.setDate (tom.getDate () + 1);
M=号(tom.getMonth ()) + 1
返回tom.getYear () +“-”+ M +“-”+ tom.getDate ();
}
本周第一天
showWeekFirstDay()函数
{
var Nowdate=new日期();
var WeekFirstDay=new日期(Nowdate (Nowdate.getDay () 1) * 86400000);
M=号(WeekFirstDay.getMonth ()) + 1
返回WeekFirstDay.getYear () +“-”+ M +“-”+ WeekFirstDay.getDate ();
}
本周最后天
showWeekLastDay()函数
{
var Nowdate=new日期();
var WeekFirstDay=new日期(Nowdate (Nowdate.getDay () 1) * 86400000);
var WeekLastDay=new日期(WeekFirstDay/1000 + 6 * 86400 * 1000);
M=号(WeekLastDay.getMonth ()) + 1
返回WeekLastDay.getYear () +“-”+ M +“-”+ WeekLastDay.getDate ();
}
本月第一天
showMonthFirstDay()函数
{
var Nowdate=new日期();
var MonthFirstDay=new日期(Nowdate.getYear (), Nowdate.getMonth (), 1);
M=号(MonthFirstDay.getMonth ()) + 1
返回MonthFirstDay.getYear () +“-”+ M +“-”+ MonthFirstDay.getDate ();
}
本月最后一天
showMonthLastDay()函数
{
var Nowdate=new日期();
var MonthNextFirstDay=new日期(Nowdate.getYear (), Nowdate.getMonth () + 1, - 1);
var MonthLastDay=new日期(monthnextfirstday - 86400000);
M=号(MonthLastDay.getMonth ()) + 1
返回MonthLastDay.getYear () +“-”+ M +“-”+ MonthLastDay.getDate ();
}
函数取得时间(年代)
{
var time1=. getelementbyid (“num1”);
var time2=. getelementbyid (“num2”);
如果(s==1) {//本日时间
time1.value=https://www.yisu.com/zixun/showToDay ();//警报(“今日:“+ time1.value);
time2.value=https://www.yisu.com/zixun/showTomorrow ();//警报(“今日:“+ time2.value);
}else if (s==2) {//本周时间
time1.value=https://www.yisu.com/zixun/showWeekFirstDay ();//警报(“本月第一天:“+ time1.value);
time2.value=https://www.yisu.com/zixun/showWeekLastDay ();//警报(“本月最后一天:“+ time2.value);
其他}{//本月时间
time1.value=https://www.yisu.com/zixun/showMonthFirstDay ();//警报(“本月第一天”+ time1.value);
time2.value=https://www.yisu.com/zixun/showMonthLastDay ();//警报(“本月最后一天”+ time2.value);
}
}
之前
其他网友补充的完整测试代码
& lt; !DOCTYPE html>
& lt; html lang=癳n”比;
& lt; head>
& lt;元charset=皍tf - 8”比;
& lt; title> Document
& lt;/head>
& lt; body>
& lt;输入类型="文本" id=" dateFrom " value="比;
& lt;输入类型="文本" id=" dateTo " value="比;
& lt; script>
窗口。onload=function () {//获取当前日期(“thisDay”);//获取当前日期(“这个星期”);//获取当前日期(“thisMonth”);
获取当前日期(“今年”);
}//获取推送时间段
函数获取当前日期(类型){
var kssj jssj;
今天var=new日期();
var天=1000 * 60 * 60 * 24;
如果(type==皌hisDay”){//当天
kssj=new日期();
jssj=new日期();
}
如果(type==这个星期){//本周周
kssj=getThisWeekFirstDay();//本周第一天
jssj=new日期();
}
如果(type==皌hisMonth”){//本月
kssj=getThisMonthFirstDay();//本月第一天
jssj=new日期();
}
如果(type==敖衲辍?{
kssj=getThisYearFirstDay();//本年第一天
jssj=new日期();
}
var dateFrom=kssj.format (“yyyy-MM-dd”);
var dateTo=jssj.format (“yyyy-MM-dd”);
. getelementbyid (dateFrom) value=https://www.yisu.com/zixun/dateFrom;
. getelementbyid (dateTo) value=https://www.yisu.com/zixun/dateTo;
}
函数getThisWeekFirstDay () {
现在var=新的日期();
var天=now.getDay ();
var周=?234567”;
首先var=0 - week.indexOf(天);
var thisWeekfirstDay=新的日期;
thisWeekfirstDay。设置当前日期(thisWeekfirstDay。获取当前日期()+第一);
返回thisWeekfirstDay;
}
函数getThisMonthFirstDay () {
var=new日期();
date.setDate (1);
返回日期;
}
函数getThisYearFirstDay () {
var currentDate=new日期();
var currentYear=currentDate.getFullYear ();
var currentYearFirstDate=new日期(currentYear 0 1);
返回currentYearFirstDate;
}//数据类型转字符串
Date.prototype。格式=function(格式)
{
var o={
“M +”: this.getMonth() + 1,//月
“d +”: this.getDate()//天
“h +”: this.getHours()//小时
“m +”: this.getMinutes()//分钟
“s +”: this.getSeconds()//秒
“q +”: Math.floor (this.getMonth() + 3)/3),//季度
“S”: this.getMilliseconds()//毫秒
}
如果(/(y +)/test(格式))格式=format.replace (RegExp。1美元,
(this.getFullYear () + " ")。substr(长度)4 - RegExp。1.美元);
在o k (var)如果(新RegExp (“(“+ k +”)”)。test(格式)
格式=format.replace (RegExp。1美元,
RegExp。1美元。长度==1 & # 63;o [k]:
(“00”+ o [k])。substr ((" + o [k]) . length));
返回格式;
}
& lt;/script>
& lt;/body>
& lt;/html>
