js实现将时分秒转化成毫秒，将秒转化成时分秒

// 时间转为毫秒

timeToSec(time) {

var hour = time.split('[0]

var min = time.split('[1]

var sec = time.split('[2]

var s = Number(hour * 3600) + Number(min * 60) + Number(sec)

return s * 1000

}

// 将秒转化成时分秒

　secTotime(s) {

var t

if(s > -1){

var hour = Math.floor(s/3600)

var min = Math.floor(s/60) % 60

var sec = s % 60

if(hour < 10) {

t = '0'+ hour + ":"

} else {

t = hour + ":"

}

if(min < 10){

t += "0"

}

t += min + ":"

if(sec < 10){

t += "0"

}

t += sec.toFixed(2)

}

return t

}