lovecoding
/
VIP20


			
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							<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <button id="btn">123</button> 
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  <button id="btn1">停止</button>
  <script>
    var btn = document.getElementById('btn')
    var btn1 = document.getElementById('btn1')
    // btn.onclick = function () {
    //   // scrollTo(0,100) 是定位到某个位置 
    //   // scrollBy(0,-100) 是从当前位置 串到某个位置
    //   // setTimeout(() => {
    //   //   console.log(123)
    //   // }, 1000);
    //   var a = setInterval(function () {
    //     console.log(123)
    //   }, 1000)
    //   btn1.onclick = function () {
    //     clearInterval(a)
    //   }
    // }

    btn.onclick = function(){
      var time1 = setInterval(function() {
        var max = document.documentElement.scrollTop || document.body.scrollTop;//滚动条滚动的距离
        console.log(max)
        if(max < 483.20001220703125){
          scrollBy(0,10)
        } else {
          clearInterval(time1)
        }
        //483.20001220703125
      },100);
    }

    console.log(Math.random()) //0-1随机数

    setInterval(function(){
      console.log(Math.floor(Math.random()*100))
    },1000)
    
  </script>
</body>

</html>