迅速运动

<div id="wrap"> <button id="btn">运动</button> <div class="box" id="box1"> </div> </div> 

*{
    padding: 0; margin: 0; } .box{ width: 200px; height: 200px; background-color: #FF0000; position: absolute; top: 50px; left: 0px; } 

    var btn = document.getElementById('btn'); var box1 = document.getElementById('box1') var count = 0; var time = null; btn.onclick = function(){ time = setInterval(function(){ count+=10; if(count>1000){ clearInterval(time) box1.style.display = 'none' } box1.style.left = count + 'px' },10) }