Javascript 如何获得秒、分或小时的时差？

我只有两个字符串值，比如02:00pm和10:00pm。如何计算两者的差异

---

我这里没有约会。我只有时间。你可以试试这个。我希望它能帮助你：

function diff(start, end) {
 start = start.split(":");
 end = end.split(":");
 var startDate = new Date(0, 0, 0, start[0], start[1], 0);
 var endDate = new Date(0, 0, 0, end[0], end[1], 0);
 var diff = endDate.getTime() - startDate.getTime();
 var hours = Math.floor(diff / 1000 / 60 / 60);
 diff -= hours * 1000 * 60 * 60;
 var minutes = Math.floor(diff / 1000 / 60);

// If using time pickers with 24 hours format, add the below line get exact hours
 if (hours < 0)
   hours = hours + 24;

 return (hours <= 9 ? "0" : "") + hours + ":" + (minutes <= 9 ? "0" : "") + minutes;
}

---

到目前为止您尝试了什么？请同时添加一个带有图标的工作代码段。