時間格式轉換

toUTC.js

//  1554863406354 to Wed Apr 10 2019 10:29:26 GMT+0800 (台北標準時間)

function toUTC (value) {
  var date = new Date()
  if (value) {
    date = new Date(value)
  }
  var nowUtc = Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(),
    date.getUTCHours(), date.getUTCMinutes(), date.getUTCSeconds())
  return nowUtc
}

// use: new Date(toUTC());

//源至： https://stackoverflow.com/questions/948532/how-do-you-convert-a-javascript-date-to-utc