3-2 时间对象

1.时间戳

var oDate = new Date();

var year = oDate.getFullYear()
/ 月份0开始 和数组一样 /

var year = oDate.getFullYear()
var month = oDate.getMonth() // 月 （从0开始）
var date = oDate.getDate() // 日
var day = oDate.getDay() //星期 （周日返回0）
var hour = oDate.getHours() //时
var minute = oDate.getMinutes() //分
var second = oDate.getSeconds() //秒
/ 获取毫秒 /
var mill = oDate.getTime()
var day = oDate.getDay()

<p id="p"></p>
<script>
    /* 从此刻到2019-09-19 09:00:00剩余时间  */
    setInterval(function () {
        var oDate = new Date();
        var playTime = new Date("2019-09-19 09:00:00").getTime()
        var mill = oDate.getTime();
        var gapTime = playTime - mill;
        var seconds = Math.floor(gapTime / 1000);
        var hours = Math.floor(seconds / 3600)
        seconds = seconds % 3600;
        var minutes = Math.floor(seconds / 60)
        seconds = seconds % 60;
        function transform(params) {
            return params < 10 ? "0" + params : params;
        }
        var sum = transform(hours) + ":" + transform(minutes) + ":" + transform(seconds);
        document.getElementById("p").innerHTML = sum;
    },1000)
</script>