JavaScript Date对象应用实例分享

2019-11-19 15:01:48

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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武林网。

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