时分秒与秒互转的两个小方法

 1 // 普通时间格式转成秒
 2 var timeToSec = function (time) {
 3   var timeArr = time.split(':')
 4   var hour = timeArr[0]
 5   var minute = timeArr[1]
 6   var sec = timeArr[2]
 7 
 8   return Number(hour * 3600) + Number(minute * 60) + Number(sec)
 9 }
10 
11 
12 // 秒转为普通时间
13 var secToTime = function (s) {
14   var hour = parseInt(s / 3600)
15   var minute = parseInt((s - (hour * 3600)) / 60)
16   var sec = s - (hour * 3600) - (minute * 60)
17 
18   var H = hour > 9 ? hour : '0' + hour
19   var M = minute > 9 ? minute : '0' + minute
20   var S = sec > 9 ? sec : '0' + sec
21 
22   return H + ':' + M + ':' + S
23 }