// 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

我使用:

var duration = moment.duration("09:30");
var str = moment(duration._data).format("HH:mm");

我在var str中得到"09:30"

我们正在考虑在moment.js中为持续时间添加某种格式。参见https://github.com/timrwood/moment/issues/463

其他几个可能会有所帮助的库是http://countdownjs.org/和https://github.com/icambron/twix.js

这对我来说很管用:

moment({minutes: 150}).format('HH:mm') // 01:30

我的特定用例的最佳场景是:

var duration = moment.duration("09:30"),
    formatted = moment.utc(duration.asMilliseconds()).format("HH:mm");

这改进了@Wilson的回答，因为它不访问私有内部属性_data。

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);