微信小程序中显示倒计时：
index.wxml:
<view>剩:<text> {{countDownDay}} </text> 天 <text>{{countDownHour}} </text> <text>{{countDownMinute}} </text> <text>{{countDownSecond}} </text> </view>
index.js:
Page( { data: { windowHeight: 654, maxtime: "", isHiddenLoading: true, isHiddenToast: true, dataList: {}, countDownDay: 0, countDownHour: 0, countDownMinute: 0, countDownSecond: 0, }, //事件处理函数 bindViewTap: function() { wx.navigateTo( { url: '../logs/logs' }) }, onLoad: function() { this.setData( { windowHeight: wx.getStorageSync( 'windowHeight' ) }); }, // 页面渲染完成后 调用 onReady: function () { var totalSecond = Date.parse(new Date("2018/12/12")) / 1000 - Date.parse(new Date()) / 1000; var interval = setInterval(function () { // 秒数 var second = totalSecond; // 天数位 var day = Math.floor(second / 3600 / 24); var dayStr = day.toString(); if (dayStr.length == 1) dayStr = '0' + dayStr; // 小时位 var hr = Math.floor((second - day * 3600 * 24) / 3600); var hrStr = hr.toString(); if (hrStr.length == 1) hrStr = '0' + hrStr; // 分钟位 var min = Math.floor((second - day * 3600 *24 - hr * 3600) / 60); var minStr = min.toString(); if (minStr.length == 1) minStr = '0' + minStr; // 秒位 var sec = second - day * 3600 * 24 - hr * 3600 - min*60; var secStr = sec.toString(); if (secStr.length == 1) secStr = '0' + secStr; this.setData({ countDownDay: dayStr, countDownHour: hrStr, countDownMinute: minStr, countDownSecond: secStr, }); totalSecond--; if (totalSecond < 0) { clearInterval(interval); wx.showToast({ title: '活动已结束', }); this.setData({ countDownDay: '00', countDownHour: '00', countDownMinute: '00', countDownSecond: '00', }); } }.bind(this), 1000); }, //cell事件处理函数 bindCellViewTap: function (e) { var id = e.currentTarget.dataset.id; wx.navigateTo({ url: '../babyDetail/babyDetail?id=' + id }); } })
运行结果如下图所示：
