WeChat applet realizes the effect of shaking the sieve

<!--pages/game/game.wxml-->

<view class="text">The number of sieve points is: {{total}}</view>
<view class="point1">
  <image src="{{top}}">
  </image>
</view>
<view class="point2">
  <image src="{{left}}"></image>
  <image src="{{right}}">
  </image>
</view>
<button class='{{btn}}' bindtap='click'>{{texts}}</button>

data: {
    top: "../images/images/1-point.png",
    total: '',
    left: "../images/images/2-point.png",
    right: "../images/images/3-point.png",
    btn: '.btnStart',
    texts:'Shake it',
    flag: true,
    img:[
      "../images/images/1-point.png",
      "../images/images/2-point.png",
      "../images/images/3-point.png",
      "../images/images/4-point.png",
      "../images/images/5-point.png",
      "../images/images/6-point.png"

    ]

  },

  /**
   * Life cycle function--listen for page loading*/
 click:function(){
   var self = this;
   if(this.data.flag){
    
     self.timer = setInterval(function(){
       var one = Math.floor(Math.random() * 6);
       var two = Math.floor(Math.random() * 6);
       var three = Math.floor(Math.random() * 6);
        self.setData({          
          top: self.data.img[one],
          left: self.data.img[two],
          right: self.data.img[three],
          total:one+two+three+3,
          
        })
     },200)
     self.setData({
       btn: ".btnEnd",
       texts: 'Stop',
       flag:false,
     })
     
   } else {
     clearInterval(self.timer);

     self.setData({
       btn: ".btnStart",
       texts: 'Shake it',
       flag: true,


     })

   }
   
 },