js实现随机抽选效果、随机抽选红色球效果

  
  


  

  go
  stop
  

  
  
  


  

    

      01
      02
      03
      04
      05
      06
      07
      08
      09
      10
      11
      12
      13
      14
      15
      16
      17
      18
      19
      20
      21
      22
      23
      24
      25
      26
      27
      28
      29
      30
      31
      32
      33
    
    

      机选红球
      清空
    
  
  

var timer = 0;
  selectBtn.onclick = function() {
    clearTimeout(timer);
    timer = setInterval(selectBall,100);
    setTimeout(function() {
      clearTimeout(timer);
    },3000)
    // clearTimeout(timer);
  }