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  • 微信小程序定时执行及清除定时器 及 this.setData({}) 设置对象内属性

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    代码如下:

    // pages/setIntervals/setIntervals.js
    Page({
    
      /**
       * 页面的初始数据
       */
      data: {
        Numbers: 0,
        NumbersTimeOut: 0,
        Interval: null,
        timeOut: null
      },
    
      /**
       * 生命周期函数--监听页面加载
       */
      onLoad: function (options) {
        this.getdata2();
      },
    
      ///重复执行
      getdata() {
        let that = this;
        that.data.Interval = setInterval(() => {
          that.setData({
            Numbers: ++that.data.Numbers
          })
          console.log(that.data.Numbers)
        }, 1000);
      },
    
      ///执行一次 方法体内用了递归,清除的时候,有可能又被重新赋值--不建议使用递归调用 有可能清除不掉
      getdata2() {
        let that = this;
         that.data.timeOut = setTimeout(() => {
          that.setData({
            NumbersTimeOut: ++that.data.NumbersTimeOut
          })
          console.log(that.data.NumbersTimeOut)
          this.getdata2();
        }, 1000);
      },
      /**
       * 生命周期函数--监听页面隐藏
       */
      onHide: function () {
        let that = this
        clearInterval(that.data.Interval);
        clearTimeout(that.data.timeOut);
      },
    
      /**
       * 生命周期函数--监听页面卸载
       */
      onUnload: function () {
        let that = this
         clearInterval(that.data.Interval);
         clearTimeout(that.data.timeOut);
      },
    })

    详情参考:https://developers.weixin.qq.com/miniprogram/dev/reference/api/setTimeout.html

    设置对象内属性:

      data: {
        Numbers: 0,
        NumbersTimeOut: 0,
        Interval: null,
        timeOut: null,
        txt:{
          v1:'1',
          v2:'2'
        }
      },
    
      bindinput(e) {
        let {v1,v2}=this.data.txt;
        this.setData({
          'txt.v1':e.detail.value
        })
      },

    @天才卧龙的博客

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  • 原文地址:https://www.cnblogs.com/chenwolong/p/15597402.html
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