我想要时差。时间格式为HH：MM：SS

Question

我收到错误 NaN 。我的代码如下所示：

var moment = require('moment');
var startTime = moment('8:73:18', 'HH:mm:ss')
var endTime = moment('10:73:18', 'HH:mm:ss')
var secondsDiff = moment(endTime).diff(startTime, 'seconds')

console.log(secondsDiff)