js获取本日、本周、本月的时间代码
编程学习 2021-07-04 15:02www.dzhlxh.cn编程入门
本篇文章给大家分享的内容是利用js如何获取本日、本周、本月的时间代码，有一定的参考价值，有需要的朋友可以参考一下
本日时间
function showToDay()
{
var Nowdate=new Date();
M=Number(Nowdate.getMonth())+1
alert(Nowdate.getMonth()+"月,"+Nowdate.getDate()+"号,星期"+Nowdate.getDay());
return Nowdate.getYear()+"-"+M+"-"+Nowdate.getDate();
}
昨天
function showTomorrow()
{
var tom=new Date();
tom.setDate(tom.getDate()+1);
M=Number(tom.getMonth())+1
return tom.getYear()+"-"+M+"-"+tom.getDate();
}
本周第一天
function showWeekFirstDay()
{
var Nowdate=new Date();
var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);
M=Number(WeekFirstDay.getMonth())+1
return WeekFirstDay.getYear()+"-"+M+"-"+WeekFirstDay.getDate();
}
本周最后天
function showWeekLastDay()
{
var Nowdate=new Date();
var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);
var WeekLastDay=new Date((WeekFirstDay/1000+6*86400)*1000);
M=Number(WeekLastDay.getMonth())+1
return WeekLastDay.getYear()+"-"+M+"-"+WeekLastDay.getDate();
}
本月第一天
function showMonthFirstDay()
{
var Nowdate=new Date();
var MonthFirstDay=new Date(Nowdate.getYear(),Nowdate.getMonth(),1);
M=Number(MonthFirstDay.getMonth())+1
return MonthFirstDay.getYear()+"-"+M+"-"+MonthFirstDay.getDate();
}
本月最后一天
function showMonthLastDay()
{
var Nowdate=new Date();
var MonthNextFirstDay=new Date(Nowdate.getYear(),Nowdate.getMonth()+1,1);
var MonthLastDay=new Date(MonthNextFirstDay-86400000);
M=Number(MonthLastDay.getMonth())+1
return MonthLastDay.getYear()+"-"+M+"-"+MonthLastDay.getDate();
}
function getTime(s)
{
var time1=document.getElementById("num1");
var time2=document.getElementById("num2");
if(s==1){
//本日时间
time1.value=showToDay();
//alert("今日:"+time1.value);
time2.value=showTomorrow();
//alert("今日:"+time2.value);
}else if(s==2){
//本周时间
time1.value=showWeekFirstDay();
//alert("本月第一天:"+time1.value);
time2.value=showWeekLastDay();
//alert("本月最后一天:"+time2.value);
}else{
//本月时间
time1.value=showMonthFirstDay();
//alert("本月第一天"+time1.value);
time2.value=showMonthLastDay();
//alert("本月最后一天"+time2.value);
}
}
其他网友补充的完整测试代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<input type="text" id="dateFrom" value="">
<input type="text" id="dateTo" value="">
<script>
window.onload = function() {
// getDate("thisDay");
// getDate("thisWeek");
// getDate("thisMonth");
getDate("thisYear");
}
//获取推送时间段
function getDate(type){
var kssj,jssj;
var today = new Date();
var DAY = 1000*60*60*24;
if(type =="thisDay") { //当天
kssj = new Date();
jssj = new Date();
}
if(type == "thisWeek") { //本周周
kssj = getThisWeekFirstDay();//本周第一天
jssj = new Date();
}
if(type == "thisMonth") { //本月
kssj = getThisMonthFirstDay();//本月第一天
jssj = new Date();
}
if(type == "thisYear") {
kssj = getThisYearFirstDay();//本年第一天
jssj = new Date();
}
var dateFrom = kssj.format('yyyy-MM-dd');
var dateTo = jssj.format('yyyy-MM-dd');
document.getElementById("dateFrom").value=dateFrom;
document.getElementById("dateTo").value=dateTo;
}
function getThisWeekFirstDay() {
var now = new Date();
var day = now.getDay();
var week = "1234567";
var first = 0 - week.indexOf(day);
var thisWeekfirstDay = new Date;
thisWeekfirstDay.setDate (thisWeekfirstDay.getDate () + first);
return thisWeekfirstDay;
}
function getThisMonthFirstDay(){
var date=new Date();
date.setDate(1);
return date;
}
function getThisYearFirstDay() {
var currentDate=new Date();
var currentYear=currentDate.getFullYear();
var currentYearFirstDate=new Date(currentYear,0,1);
return currentYearFirstDate;
}
//data类型转string
Date.prototype.format = function(format)
{
var o = {
"M+" : this.getMonth()+1, //month
"d+" : this.getDate(), //day
"h+" : this.getHours(), //hour
"m+" : this.getMinutes(), //minute
"s+" : this.getSeconds(), //second
"q+" : Math.floor((this.getMonth()+3)/3), //quarter
"S" : this.getMilliseconds() //millisecond
}
if(/(y+)/.test(format)) format=format.replace(RegExp.$1,
(this.getFullYear()+"").substr(4 - RegExp.$1.length));
for(var k in o)if(new RegExp("("+ k +")").test(format))
format = format.replace(RegExp.$1,
RegExp.$1.length==1 ? o[k] :
("00"+ o[k]).substr((""+ o[k]).length));
return format;
}
</script>
</body>
</html>
这样基本上就解决问题了