如何使用JavaScript将秒转换为HH-MM-SS字符串?
当前回答
我知道这有点老了,但是…
ES2015:
var toHHMMSS = (secs) => {
var sec_num = parseInt(secs, 10)
var hours = Math.floor(sec_num / 3600)
var minutes = Math.floor(sec_num / 60) % 60
var seconds = sec_num % 60
return [hours,minutes,seconds]
.map(v => v < 10 ? "0" + v : v)
.filter((v,i) => v !== "00" || i > 0)
.join(":")
}
它将输出:
toHHMMSS(129600) // 36:00:00
toHHMMSS(13545) // 03:45:45
toHHMMSS(180) // 03:00
toHHMMSS(18) // 00:18
其他回答
我知道这有点老了,但是…
ES2015:
var toHHMMSS = (secs) => {
var sec_num = parseInt(secs, 10)
var hours = Math.floor(sec_num / 3600)
var minutes = Math.floor(sec_num / 60) % 60
var seconds = sec_num % 60
return [hours,minutes,seconds]
.map(v => v < 10 ? "0" + v : v)
.filter((v,i) => v !== "00" || i > 0)
.join(":")
}
它将输出:
toHHMMSS(129600) // 36:00:00
toHHMMSS(13545) // 03:45:45
toHHMMSS(180) // 03:00
toHHMMSS(18) // 00:18
更新(2020):
请使用@Frank的一句话解决方案:
new Date(SECONDS * 1000).toISOString().substring(11, 16)
如果SECONDS<3600并且你只想显示MM:SS,那么使用下面的代码:
new Date(SECONDS * 1000).toISOString().substring(14, 19)
这是目前为止最好的解决办法。
旧的回答:
使用Moment.js库。
var time1 = date1.getTime();
var time2 = date2.getTime();
var totalMilisec = time2 - time1;
alert(DateFormat('hh:mm:ss',new Date(totalMilisec)))
/* ----------------------------------------------------------
* Field | Full Form | Short Form
* -------------|--------------------|-----------------------
* Year | yyyy (4 digits) | yy (2 digits)
* Month | MMM (abbr.) | MM (2 digits)
| NNN (name) |
* Day of Month | dd (2 digits) |
* Day of Week | EE (name) | E (abbr)
* Hour (1-12) | hh (2 digits) |
* Minute | mm (2 digits) |
* Second | ss (2 digits) |
* ----------------------------------------------------------
*/
function DateFormat(formatString,date){
if (typeof date=='undefined'){
var DateToFormat=new Date();
}
else{
var DateToFormat=date;
}
var DAY = DateToFormat.getDate();
var DAYidx = DateToFormat.getDay();
var MONTH = DateToFormat.getMonth()+1;
var MONTHidx = DateToFormat.getMonth();
var YEAR = DateToFormat.getYear();
var FULL_YEAR = DateToFormat.getFullYear();
var HOUR = DateToFormat.getHours();
var MINUTES = DateToFormat.getMinutes();
var SECONDS = DateToFormat.getSeconds();
var arrMonths = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
var arrDay=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday');
var strMONTH;
var strDAY;
var strHOUR;
var strMINUTES;
var strSECONDS;
var Separator;
if(parseInt(MONTH)< 10 && MONTH.toString().length < 2)
strMONTH = "0" + MONTH;
else
strMONTH=MONTH;
if(parseInt(DAY)< 10 && DAY.toString().length < 2)
strDAY = "0" + DAY;
else
strDAY=DAY;
if(parseInt(HOUR)< 10 && HOUR.toString().length < 2)
strHOUR = "0" + HOUR;
else
strHOUR=HOUR;
if(parseInt(MINUTES)< 10 && MINUTES.toString().length < 2)
strMINUTES = "0" + MINUTES;
else
strMINUTES=MINUTES;
if(parseInt(SECONDS)< 10 && SECONDS.toString().length < 2)
strSECONDS = "0" + SECONDS;
else
strSECONDS=SECONDS;
switch (formatString){
case "hh:mm:ss":
return strHOUR + ':' + strMINUTES + ':' + strSECONDS;
break;
//More cases to meet your requirements.
}
}
您可以使用ES6生成器创建高度可定制的时间字符串。
下面是将数字从给定比例转换为数组的通用函数:
函数toScaledArray (n,尺度){ 函数* g(x, n=0){ 如果(x > 0) { 产生x %(尺度[n] | |∞); 产量* g (Math.floor (x /鳞片[n]), n + 1) } } 返回g (n)[…] } console.log (toScaledArray (6 (10,10))) console.log (toScaledArray(2000年,[30,12])) console.log (toScaledArray(45000年,[12]24日30日))
因此,我们可以使用它来创建时间字符串,如下所示:
> toScaledArray(45000,[60,60]).reverse().join(":")
< '12:30:0'
> toScaledArray(1234,[60,60]).reverse().join(":")
< '20:34'
函数也可以写成一行:
[...(function* g(x,n=0,scales=[60,60]){if(x>0) {yield x%(scales[n]||Infinity); yield* g(Math.floor(x/scales[n]),n+1,scales)}})(45000)].reverse().join("-")
上面的函数将省略前导零,如果你想将字符串精确地转换为'HH-MM-SS',你可以使用
[...(function* g(x,n=0,scales=[60,60]){if(x>0||n<3) {yield x%(scales[n]||Infinity); yield* g(Math.floor(x/scales[n]),n+1,scales)}})(45000)].reverse().map(x=>String(x).padStart(2, '0')).join("-")
此外,如果你需要的是'[H:]MM:SS',这里我们有:
Number.prototype.toTimeString = function(){ 返回[…(*函数g (x, n = 0,鳞片= (60 60)){if (x > 0 | | n < 2){收益率x %(尺度[n] | |∞);产量* g (Math.floor (x /鳞片[n]), n + 1,尺度)}})(这)]. map ((x, n) = > n < 2 ?字符串(x) .padStart (2, ' 0 '): x) .reverse () . join(“:”) } console.log (12 (12) .toTimeString ()) console.log (345, (345) .toTimeString ()) console.log (6789, (6789) .toTimeString ())
你也可以有D(ay),甚至M(onth)和Y(ear)(虽然不准确),如下所示:
> toScaledArray(123456789,[60,60,24,30,12]).map((x,n)=>n<2?String(x).padStart(2,'0'):x).reverse().join(":")
< '3:11:18:21:33:09'
这里输出的意思是“3年11个月18天21小时33分9秒”
总之,这是一种高度可定制的将数字转换为可缩放数组的方法,可用于时间字符串转换、人类可读的字节转换甚至纸币的更改。
下面是一个函数,根据powtac的答案将秒转换为hh-mm-ss格式
斯菲德尔
/**
* Convert seconds to hh-mm-ss format.
* @param {number} totalSeconds - the total seconds to convert to hh- mm-ss
**/
var SecondsTohhmmss = function(totalSeconds) {
var hours = Math.floor(totalSeconds / 3600);
var minutes = Math.floor((totalSeconds - (hours * 3600)) / 60);
var seconds = totalSeconds - (hours * 3600) - (minutes * 60);
// round seconds
seconds = Math.round(seconds * 100) / 100
var result = (hours < 10 ? "0" + hours : hours);
result += "-" + (minutes < 10 ? "0" + minutes : minutes);
result += "-" + (seconds < 10 ? "0" + seconds : seconds);
return result;
}
示例使用
var seconds = SecondsTohhmmss(70);
console.log(seconds);
// logs 00-01-10