时分秒与秒互转的两个小方法

// 普通时间格式转成秒
var timeToSec = function (time) {
  var timeArr = time.split(':')
  var hour = timeArr[0]
  var minute = timeArr[1]
  var sec = timeArr[2]

  return Number(hour * 3600) + Number(minute * 60) + Number(sec)
}


// 秒转为普通时间
var secToTime = function (s) {
  var hour = parseInt(s / 3600)
  var minute = parseInt((s - (hour * 3600)) / 60)
  var sec = s - (hour * 3600) - (minute * 60)

  var H = hour > 9 ? hour : '0' + hour
  var M = minute > 9 ? minute : '0' + minute
  var S = sec > 9 ? sec : '0' + sec

  return H + ':' + M + ':' + S
}