作者:丁郁翰761891 | 来源:互联网 | 2018-06-14 19:55
1、比较两个日期先后
var x = new Date('2015-05-25');
var y = new Date('2015-05-25');
if (x.getTime() == y.getTime()) {
It'll be true;
}
2、是否在两个日期之间
var beforeSpringDate, afterSpringDate;
for (var i = 0; i = beforeSpringDate.getTime() && time <= afterSpringDate.getTime()) {
result = true;
break;
}
}
3、一行代码判断是否是闰年
var input = new Date();new Date(input.getFullYear(), 1, 29).getDate() === 29
false
var input = new Date(2012,1,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
true
var input = new Date(2013,1,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
false
var input = new Date(2014,1,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
false
var input = new Date(2014,5,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
false
var input = new Date(2014,6,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
false
var input = new Date(2016,6,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
true
var input = new Date(2000,6,1);new Date(input.getFullYear(), 1, 29).getDate() === 29
true
4、判断重大节日(国庆、春节)前后一周状态
var holiday = {};
function inNationalDay(date) {
var result = {
beforeNationalDay: false,
duringNationalDay: false
};
if (date) {
var mOnth= date.getMonth() + 1,
day = date.getDate();
if (mOnth== 9 && (day >= 24 && day <= 30)) {
result.beforeNatiOnalDay= true;
} else if(mOnth== 10 && (day >= 1 && day <= 7)) {
result.duringNatiOnalDay= true;
}
}
return result;
}
function inSpringFestival(date) {
var result = {
beforeSpringFestival: false,
duringSpringFestival: false
};
if (date) {
// set GMT+0800 hours(set china hour +8)
date = new Date(date.getFullYear(), date.getMonth(), date.getDate(), 8);
var time = date.getTime();
var springFestivalDays = ['2015-02-19', '2016-02-08', '2017-01-28', '2018-02-16', '2019-02-05',
'2020-01-25', '2021-02-12', '2022-02-01', '2023-01-22', '2024-02-10'];
var springDay, springDate, beforeSpringDate, afterSpringDate;
for (var i = 0; i = beforeSpringDate.getTime() && time = springDate.getTime() && time
5、判断星期几
《SCRIPT》
var s = '2011-11-17';
alert( "今天星期 "+"天一二三四五六 ".charAt(new Date(s).getDay()));
alert("星期 " + new Date(s).getDay());
《SCRIPT》
也可以这样:
var weekDay = ["星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"];
var dateStr = "2008-08-08";
var myDate = new Date(Date.parse(dateStr.replace(/-/g, "/")));
alert(weekDay[myDate.getDay()]);