微信小程序 設置計時器(setInterval)、清除計時器(clearInterval)

一、wxml代碼javascript

<!--index.wxml-->
<view class="container">
  <button type='primary' style='margin-bottom:40px;' bindtap='startSetInter'>開始</button>
  <button type='primary' bindtap='endSetInter'>結束</button>
</view>

  

二、js代碼java

  將計時器賦值給 data 中的變量,這樣在任何方法中均可以清除計時器ide

Page({
  data: {
	  //存儲計時器
	setInter:'',
	num:1,
  },
  onLoad: function () {
	  var that = this;
	  
  },
  startSetInter: function(){
	  var that = this;
	  //將計時器賦值給setInter
	  that.data.setInter = setInterval(
		  function () {
			  var numVal = that.data.num + 1;
			  that.setData({ num: numVal });
			  console.log('setInterval==' + that.data.num);
		  }
	, 2000);	
  },
  endSetInter: function(){
	  var that = this;
	  //清除計時器  即清除setInter
	  clearInterval(that.data.setInter)
  },
  onHide: function () {

  },
  onUnload: function () {
	  var that =this;
	  //清除計時器  即清除setInter
	  clearInterval(that.data.setInter)
  },

})
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