JavaScript Date对象应用实例分享
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2022-07-06 20:54:24
本文实例为大家分享了js date对象应用3个实例，供大家参考，具体内容如下
一.获取日期时间，秒数实时跳动
...
本文实例为大家分享了js date对象应用3个实例，供大家参考，具体内容如下
一.获取日期时间，秒数实时跳动
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>date01</title>
<style>
#date{
position: absolute;
font-size: 30px;
font-family: '微软雅黑';
top:50%;
left:50%;
-webkit-transform:translate(-50%,-50%);
}
</style>
</head>
<body>
<div id="date">2017.10.29</div>
<script>
window.onload = function(){
showtime();
}
//checktime(i)对分钟和秒进行判断，如果小于10，在其前补0.
function checktime(i){
return i < 10? "0"+i:i;
}
function showtime(){
var time = new date();//日期对象
console.log("new date :"+time);
var year_1 = time.getyear();//获得年份
console.log("getyear(): "+year_1);
var year_2 = time.getfullyear();//获得完整年份
console.log("getfullyear(): "+year_2);
var month = time.getmonth();//获得月份(0~11)
console.log("getmonth(): "+month);
var date = time.getdate();//获得日期(1~31)
console.log("getdate(): "+date);
var day = time.getday();//星期几(0~6)
console.log("getday(): "+day)
var hours = time.gethours();//小时(0~23)
console.log("gethours(): "+hours);
var min = time.getminutes();//分钟(0~59)
console.log("getminutes(): "+min);
var seconds = time.getseconds();//秒
console.log("getseconds(): "+seconds);
min = checktime(min);
seconds = checktime(seconds);
var weekday = new array(7);
weekday[0] = "星期天";
weekday[1] = "星期一";
weekday[2] = "星期二";
weekday[3] = "星期三";
weekday[4] = "星期四";
weekday[5] = "星期五";
weekday[6] = "星期六";
var str_time = year_2 + "年" + (month+1) + "月" + date + "日" +" "+ weekday[day] +" "+ hours +":" + min +":" + seconds;
document.getelementbyid('date').innerhtml = str_time;
settimeout(showtime,500);//每500ms执行一次，实现秒数实时跳动。
}
</script>
</body>
</html>
二.高考倒计时功能（天）
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>date02</title>
<style>
#date{
position: absolute;
font-size: 30px;
font-family: '微软雅黑';
top:50%;
left:50%;
-webkit-transform:translate(-50%,-50%);
}
</style>
</head>
<body>
<div id="date">2017.10.29</div>
<script>
window.onload = function(){
var now = new date();//获取当前时间
var timedate = new date("2018,12,23");//截止时间
//gettime() 方法可返回距 1970 年 1 月 1 日之间的毫秒数。
var date = timedate.gettime() - now.gettime();
//math.ceil()向上取整
var time = math.ceil(date/(24*60*60*1000));
document.getelementbyid('date').innerhtml = time;
}
</script>
</body>
</html>
三.限时抢
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>date03</title>
<style>
#date{
position: absolute;
font-size: 30px;
font-family: '微软雅黑';
top:50%;
left:50%;
-webkit-transform:translate(-50%,-50%);
}
</style>
</head>
<body>
<div id="date">2017.10.29</div>
<script>
window.onload = function(){
showtime();
}
function checktime(i){
return i < 10? "0"+i:i;
}
function showtime(){
var now = new date();//获取当前时间
var timedate = new date("2017/10/30,24:00:00");//截止时间
//gettime() 方法可返回距 1970 年 1 月 1 日之间的毫秒数。
var lefttime = (timedate.gettime() - now.gettime())/1000;
var d = checktime(parseint(lefttime/(24*60*60)));
var h = checktime(parseint(lefttime/(60*60)%24));
var m = checktime(parseint(lefttime/60%60));
var s = checktime(parseint(lefttime%60));
var time = d + "天" + h + "小时" + m + "分钟" + s + "秒";
document.getelementbyid('date').innerhtml = time;
settimeout(showtime,500);
}
</script>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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