如果diff是一瞬间

var diff = moment(20111031) - moment(20111010);
var formated1 = moment(diff).format("hh:mm:ss");
console.log("format 1: "+formated1);

// set up
let start = moment("2018-05-16 12:00:00"); // some random moment in time (in ms)
let end = moment("2018-05-16 12:22:00"); // some random moment after start (in ms)
let diff = end.diff(start);

// execution
let f = moment.utc(diff.asMilliseconds()).format("HH:mm:ss.SSS");
alert(f);

看看JSFiddle

如果diff是一瞬间

var diff = moment(20111031) - moment(20111010);
var formated1 = moment(diff).format("hh:mm:ss");
console.log("format 1: "+formated1);

不再需要(如果曾经有过的话)将持续时间转换为utc来解决这个问题。这就像将base10的“1”转换为二进制，然后说由于输出“1”看起来像base10，我们将没有任何问题，假设这是一个base10值，用于任何后续操作。

使用moment-duration-format，注意{trim: false}可以防止修剪:

moment.duration(1000000, "seconds").format("hh:mm:ss", { trim: false })
> "277:46:40"
moment.duration(0, "seconds").format("hh:mm:ss", { trim: false })
> "00:00:00"

让我们将其与不推荐的滥用utc的方法进行比较:

moment.utc(moment.duration(1000000, "seconds").asMilliseconds()).format('HH:mm:ss')
> "13:46:40"

如果你愿意使用不同的javascript库，numeric .js可以将秒格式化如下(例如1000秒):

var string = numeral(1000).format('00:00');
// '00:16:40'

import * as moment from 'moment'
var sleep = require('sleep-promise');

(async function () {
    var t1 = new Date().getTime();
    await sleep(1000); 
    var t2 = new Date().getTime();
    var dur = moment.duration(t2-t1); 
    console.log(`${dur.hours()}h:${dur.minutes()}m:${dur.seconds()}s`);
})();

0h:0m:1s