目錄
1、基本日期操作
var myDate = new Date();
myDate.getYear(); //獲取當前年份(從1900年開始算起)
myDate.getFullYear(); //獲取完整的年份(4位,1970)
myDate.getMonth(); //獲取當前月份(0-11,0代表1月)
myDate.getDate(); //獲取當前日(1-31)
myDate.getDay(); //獲取當前星期X(0-6,0代表星期天)
myDate.getTime(); //獲取當前時間(從1970.1.1開始的毫秒數)
myDate.getHours(); //獲取當前小時數(0-23)
myDate.getMinutes(); //獲取當前分鐘數(0-59)
myDate.getSeconds(); //獲取當前秒數(0-59)
myDate.getMilliseconds(); //獲取當前毫秒數(0-999)
myDate.toLocaleDateString(); //獲取當前日期
var mytime=myDate.toLocaleTimeString(); //獲取當前時間
myDate.toLocaleString( ); //獲取日期與時間
2、根據出生日期獲取週歲
//2010-01-01
function getAge(strBirthday)
{
var returnAge;
var strBirthdayArr=new Date(strBirthday);
var birthYear = strBirthdayArr.getFullYear();
var birthMonth = strBirthdayArr.getMonth() + 1;
var birthDay = strBirthdayArr.getDate();
var d = new Date();
var nowYear = d.getFullYear();
var nowMonth = d.getMonth() + 1;
var nowDay = d.getDate();
if(nowYear == birthYear)
{
returnAge = 0;//同年 則爲0歲
}
else
{
var ageDiff = nowYear - birthYear ; //年之差
if(ageDiff > 0)
{
if(nowMonth == birthMonth)
{
var dayDiff = nowDay - birthDay;//日之差
if(dayDiff < 0)
{
returnAge = ageDiff - 1;
}
else
{
returnAge = ageDiff ;
}
}
else
{
var monthDiff = nowMonth - birthMonth;//月之差
if(monthDiff < 0)
{
returnAge = ageDiff - 1;
}
else
{
returnAge = ageDiff ;
}
}
}
else
{
returnAge = -1;//返回-1 表示出生日期輸入錯誤 晚於今天
}
}
return returnAge;//返回週歲年齡
}
3、距離活動截止還差幾小時幾分幾秒(倒計時)
//2029-03-03
var endTime = function (startTime) {
setInterval(
function(){
var str = '';
var date1 = new Date(startTime); //開始時間
var date2 = new Date(); //結束時間
var date3 = date1.getTime() - date2.getTime(); //時間差的毫秒數
if (date3>0){
// //計算相差的年數
// var years = Math.floor(date3 / (12 * 30 * 24 * 3600 * 1000));
// //計算相差的月數
var leave = date3 % (12 * 30 * 24 * 3600 * 1000);
// var months = Math.floor(leave / (30 * 24 * 3600 * 1000));
// //計算出相差天數
var leave0 = leave % (30 * 24 * 3600 * 1000);
var days = Math.floor(date3 / (24 * 3600 * 1000));
//計算出小時數
var leave1 = leave0 % (24 * 3600 * 1000); //計算天數後剩餘的毫秒數
var hours = Math.floor(leave1 / (3600 * 1000));
//計算相差分鐘數
var leave2 = leave1 % (3600 * 1000); //計算小時數後剩餘的毫秒數
var minutes = Math.floor(leave2 / (60 * 1000));
//計算相差秒數
var leave3 = leave2 % (60 * 1000); //計算分鐘數後剩餘的毫秒數
var seconds = Math.round(leave3 / 1000);
if (days > 0){
str += '<span>'+ days +'</span>天';
}
if (hours > 0){
str += '<span>'+ hours +'</span>小時';
}
str += '<span>'+ minutes +'</span>分鐘<span>'+ seconds +'</span>秒';
}else {
str = '已過期'
}
console.log(str)
},1000
);
};