Javascript math.round阈值

我跟踪一个计时器，我想以5秒为间隔触发。问题是与我的Javascript math.round阈值

if (Math.round(time.position) % 5 === 0){do stuff}

测试触发太多次了。它会触发所有的9.〜十进制值。如何以5秒为间隔触发？

time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 9.29} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 9.43} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 9.54} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 9.68} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 9.79} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 9.92} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.03} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.18} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.29} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.42} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.54} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.68} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.79} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 10.92} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 11.04} index.html:104 
time: Object {duration: 149.49, type: "jwplayerMediaTime", position: 11.17}

来源

2014-09-23 seasick

'setInterval（function（）{...}，5000）;'是否足够？ – Mandera 2014-09-23 22:14:51

不，这是由视频播放器定时器触发的。 – seasick 2014-09-23 22:15:05

你必须跟踪你已经覆盖的职位。 – Pointy 2014-09-23 22:15:21

这会每隔5秒触发一次我相信。

var previousValue = 1; 
if(Math.ceil(time.position/5) !== previousValue) { 
    previousValue = Math.ceil(time.position/5); 
}

确保您只调用第一行一次。

来源

2014-09-23 22:18:46 Mandera

谢谢，谢谢！ – seasick 2014-09-23 22:21:56

Javascript math.round阈值

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