javascript - 当 'countdown timer'用完然后运行 'alert()'中的函数 'Momentjs'时怎么办

Question

这里我使用Codeigniter和MomentJS，如何在“倒计时器”用完时运行“alert()”函数

在 Main.JS

var timeEvent = <?=$timeEvent?>;
var timeNow = <?=now('America/Santiago')?>;
var diff = timeEvent - timeNow;
var duration = moment.duration(diff*1000, 'milliseconds');
var interval = 1000;

setInterval(function(){
  duration = moment.duration(duration - interval, 'milliseconds');
  $('#result').text(duration.hours() + ":" + duration.minutes() + ":" + duration.seconds());
}, interval);

Answer 1

难道就这么简单吗？

setInterval(function(){
  duration = moment.duration(duration - interval, 'milliseconds');
  if( duration <= 0 ) {
    alert("Done");
  }
  $('#result').text(duration.hours() + ":" + duration.minutes() + ":" + duration.seconds());
}, interval);