console 命令行工具 X clear

console

function debounce(){
   let elem = document.getElementById("animate"); 
   let pos = 0;
   let POS = 350;
   let posss = 0;
   let run = false;
   return function(){
       if(!run){
        setInterval(function(){
          run = true;  
        if (pos == 350) 
       { 
        POS--;
        elem.style.top = POS + "px"; 
        elem.style.left = POS + "px"; 
        
      if(POS == 0)
      {
         pos = 0;
         POS = 350;
    }
      }else {
      pos++; 
      elem.style.top = pos + "px"; 
      elem.style.left = pos + "px"; 
    } 
        }, 5);
    }
   }
}

const moveBtn = document.querySelector("#move");

moveBtn.addEventListener('click',debounce());

<!DOCTYPE html>
<html>
<style>
#container {
  width: 400px;
  height: 400px;
  position: relative;
  background: yellow;
}
#animate {
  width: 50px;
  height: 50px;
  position: absolute;
  background-color: red;
}
</style>
<body>

<p><button id="move">单击我</button></p> 

<div id ="container">
  <div id ="animate"></div>
</div>


</body>
</html>