setTimeout(function(){

const countDown = (second) => {

  const s = second % 60;

  const m = Math.floor(second / 60);

  return m+":"+(s<10?'0'+s:s);

};

let time = 5 * 60;

const timer = setInterval(() => {

  const show = countDown(time--);

  $('div[widgetname=LABEL0]').find('.fr-label').html(show)

  if(time < 0) {

    console.log('倒计时结束！重新开始');

    time=5*60;

  }

}, 1000);

},0)