话不多说直接上代码
Page({ // 倒计时 count_down: function (countDown_time){ var that = this; var time = countDown_time.split(':') var hhh = parseInt(time[0]) var mmm = parseInt(time[1]) var sss = parseInt(time[2]) this.setData({ sss: (sss < 10) ? '0' + sss : sss, mmm: (mmm < 10) ? '0' + mmm : mmm, hhh: (hhh < 10) ? '0' + hhh : hhh }) var Interval = setInterval(function () { if (sss > 0) { sss-- } else { console.log('时间到') clearInterval(Interval) } if (sss == 0) { if (mmm > 0) { mmm-- sss = 59; } if (mmm == 0 && hhh > 0) { hhh-- sss = 59; mmm = 59; } } that.setData({ sss: (sss < 10) ? '0' + sss : sss, mmm: (mmm < 10) ? '0' + mmm : mmm, hhh: (hhh < 10) ? '0' + hhh : hhh }) }, 1000) }, onLoad: function (options) { var countDown_time = '00:21:03'; this.count_down(countDown_time) } }) <text>{{hhh}}:{{mmm}}:{{sss}}</text>