效果如下：
鼠标移动到箭头处会有动画效果的移动弹出框
代码实现：
function run(obj,long,callback){
clearInterval(obj.timer)
obj.timer=setInterval(function(){
if(obj.offsetLeft==long){
window.clearInterval(obj.timer);
if(callback){
callback();
}
}else{
step=(long-obj.offsetLeft)/10
step=step>0?Math.ceil(step):Math.floor(step)
obj.style.left=obj.offsetLeft+step+'px';
}
},20)
}
<!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>
<style>
.out{
box-sizing: border-box;
position:absolute;
right:0;
top: 0;
width: 100px;
height: 40px;
background-color: rgb(106, 47, 200);
line-height: 40px;
padding-left: 36px;
color: aliceblue;
font-size: 25px;
z-index: 1;
}
.in{
box-sizing: border-box;
position: absolute;
left: 0;
top: 0;
width: 250px;
height: 40px;
background-color:rgb(106, 47, 200);
font-size: 17px;
line-height: 40px;
padding-left: 30px;
color: aliceblue;
}
.box{
position: absolute;
right: 0;
top: 0;
width: 100px;
height: 40px;
}
.father{
position: absolute;
top: 300px;
right: 0;
top: 300px;
width: 250px;
height: 240px;
overflow: hidden;
}
</style>
<script src="run.js"></script>
</head>
<body>
<div class="father">
<div class="box">
<div class="out">←</div>
<div class="in">问题反馈</div>
</div>
</div>
<script>
var inner=document.querySelector('.in');
var out=document.querySelector('.out');
var box=document.querySelector('.box');
box.addEventListener('mouseenter',function(){
run(inner,-150,function(){
box.children[0].innerHTML='→'
})
})
box.addEventListener('mouseleave',function(){
run(inner,0,function(){
box.children[0].innerHTML='←'
})
})
</script>
</body>
</html>