微信小程序时间戳转时间，时间转时间戳，活动倒计时，清除定时器

短命女 2021-07-24 14:12 713阅读 0赞

1.时间转时间戳

dataTime(){
        //获取当前时间戳
        var timestamp = Date.parse(new Date());
        timestamp = timestamp / 1000;
        console.log("当前时间戳为：" + timestamp);
        //获取当前时间
        var n = timestamp * 1000;
        var date = new Date(n);
        //年
        var Y = date.getFullYear();
        //月
        var M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1);
        //日
        var D = date.getDate() < 10 ? '0' + date.getDate() : date.getDate();
        //时
        var h = date.getHours();
        //分
        var m = date.getMinutes();
        //秒
        var s = date.getSeconds();
        var dataTame=Y + '-' + M + '-' + D + ' ' + h + ":" + m + ":" + s
        console.log("当前时间：", dataTame)
      },

输出：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjQxNTA0_size_16_color_FFFFFF_t_70][]

2.日期转时间戳

data_time() {
        var time = '2020-06-09 00:00:00';
        var repTime = time.replace(/-/g, '/'); //用正则主要是把“2019-05-20 00:00:00”转换成“2019/05/0 00:00:00”兼容ios
        console.log("返回时间：" + repTime);
        var timeTamp = Date.parse(repTime);
        console.log("返回时间戳：" + timeTamp)
    
      },

输出：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjQxNTA0_size_16_color_FFFFFF_t_70 1][]

3.活动倒计时

count_down: function () {
        // _____当前时间倒计时2自定义时间小时
        // var time = '2020-06-09 00:00:00';
        // var repTime = time.replace(/-/g, '/'); //用正则主要是把“2019-05-20 00:00:00”转换成“2019/05/0 00:00:00”兼容ios
        // console.log("返回时间：" + repTime);
        // var totalSecond = (Date.parse(repTime) + 24 * 60 * 60 * 1000 - Date.parse(new Date())) / 1000;
        // _____当前时间倒计时24小时
        var totalSecond = (Date.parse(new Date()) + 24 * 60 * 60 * 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);
      },

输出：

![20200609103355720.png][]

4.清除定时器

var aaaa;
    //利用slice
    function truncate(arr) {
      return arr.slice(0, -1);
    }
    Page({
      data: {
      },
      onShow() {
        console.log('yyyyyyyyyyyyyyyyyyy')
        clearInterval(aaaa)
        aaaa =setInterval(function () {
          that.getInfo(mchId)
        }, 5000)
      },
      onHide: function () {
        console.log('kkkkkkkkkkkkkkk')
        clearInterval(aaaa)
      },
    })

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjQxNTA0_size_16_color_FFFFFF_t_70]: /images/20210724/c9f0348b700142a8ac3d1c15ff06c108.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMjQxNTA0_size_16_color_FFFFFF_t_70 1]: /images/20210724/2b52f117873f4525bb7a89c26b18c945.png
[20200609103355720.png]: /images/20210724/edeb8aee3c2942a88a47e02d398bdb6a.png