<view class="pay_time"> 
 <image src="{{imgUrls_pay_time}}"></image> 
 <text>支付剩余时间：</text> 
 <text>{{clock}} </text> 
</view> 

// pages/order/take_order/pay/pay.js 
var app = getApp() 
Page({ 
 data: { 
  imgUrls_pay_time: '/image/icon_orderstatus_countdown.png', 
  "productName": "", 
  "productPrice": "", 
  "payDetail": [], 
  "wxPayMoneyDesc": "", 
  "expireTime": "", 
  clock: '' 
 }, 
 onLoad: function (options) { 
  // 页面初始化 options为页面跳转所带来的参数 
  new app.WeToast() 
  var that = this; 
  that.count_down(); 
 }, 
 onReady: function () { 
  // 页面渲染完成 
 }, 
 onShow: function () { 
  // 页面显示 
 }, 
 onHide: function () { 
  // 页面隐藏 
 }, 
 onUnload: function () { 
  // 页面关闭 
 }, 
 /* 毫秒级倒计时 */ 
 count_down: function () { 
  var that = this 
  //2016-12-27 12:47:08 转换日期格式 
  var a = that.data.expireTime.split(/[^0-9]/); 
  //截止日期：日期转毫秒 
  var expireMs = new Date(a[0], a[1] - 1, a[2], a[3], a[4], a[5]); 
  //倒计时毫秒 
  var duringMs = expireMs.getTime() - (new Date()).getTime(); 
  // 渲染倒计时时钟 
  that.setData({ 
   clock: that.date_format(duringMs) 
  }); 
  if (duringMs <= 0) { 
   that.setData({ 
    clock: "支付已截止，请重新下单" 
   }); 
   // timeout则跳出递归 
   return; 
  } 
  setTimeout(function () { 
   // 放在最后-- 
   duringMs -= 10; 
   that.count_down(); 
  } 
   , 10) 
 }, 
  /* 格式化倒计时 */ 
 date_format: function (micro_second) { 
  var that = this 
  // 秒数 
  var second = Math.floor(micro_second / 1000); 
  // 小时位 
  var hr = Math.floor(second / 3600); 
  // 分钟位 
  var min = that.fill_zero_prefix(Math.floor((second - hr * 3600) / 60)); 
  // 秒位 
  var sec = fill_zero_prefix(second % 60);// equal to => var sec = second % 60; 
  return hr + ":" + min + ":" + sec + " "; 
 }, 
 /* 分秒位数补0 */ 
 fill_zero_prefix: function (num) { 
  return num < 10 ? "0" + num : num 
 } 
})