<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)
}