需求描述：当鼠标悬停在一个元素上的时候，显示气泡，气泡内容可以是一段文字或图片。实现如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>气泡显示</title>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<style type="text/css">
.container {
margin-top: 130px;
}
#xsztip {
padding: 8px 12px;
width: 140px;
display: block;
font-size: 16px;
color: #fff;
font-weight: bold;
background: #ED5517;
cursor: pointer;
}
#xszimg {
position: absolute;
display: none;
padding: 10px;
width: 160px;
background: #e0edf7;
border-radius: 6px;
}
#xszimg::before {
content: "";
position: relative;
top: -20px;
left: 10px;
width: 0;
height: 0;
display: block;
border-left: 10px solid transparent;
border-right: 10px solid transparent;
border-bottom: 10px solid #e0edf7;
}
</style>
</head>
<body>
<div class="container">
<span id="xsztip">鼠标悬停显示气泡</span>
<div id="xszimg">
<span>这是需要提示的文字内容,可以修改！</span>
</div>
</div>
<script type="text/javascript">
$(function(){
$("#xsztip").hover(function(){
show_xszimg(this);
},function(){
show_xszimg();
});
function show_xszimg(f){
var d=$("#xszimg");
if(!f){
d.fadeOut()
}else{
var c=$(f);
var e=c.offset();
var a=e.left;
var b=e.top + 44;
d.css({left:a+"px",top:b+"px"}).show();
}
}
});
</script>
</body>
</html>
