我正在创建倒计时来计算我打算观看的 2012 年欧洲杯比赛之间的时间。我已经提供了它的工作版本,但我不明白为什么它有时会给我带来负值。我认为这与我使用 getTime() 方法编写它的方式有关。这是我的代码,你们能帮我找出解决那些负值的方法吗?非常感谢您提前。
<body onload="timeto2012()">
<script type="text/javascript">
function timeto2012() {
var euro2012 = new Date(2012, 5, 10, 20, 45);
var euro2012ms = euro2012.getTime();
var now = new Date();
var nowms = now.getTime();
var diff = euro2012ms - nowms;
var seconds = 1000;
var minutes = seconds*60;
var hours = minutes*60;
var days = hours*24;
var years = days*365;
var ddays = diff/days;
var dhours = (ddays - Math.round(ddays,1))*24;
var dminutes = (dhours - Math.round(dhours))*60;
var dseconds = (dminutes - Math.round(dminutes))*60;
document.getElementById("time").innerHTML='' + Math.round(ddays,1) +' days '+ Math.round(dhours,1) +' hours '+ Math.round(dminutes,1) +' minutes '+ Math.round(dseconds,1) + ' seconds remaining';
}
t=setInterval(timeto2012,500);
</script>
<div id="time"></div>
</body>