<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
*{
margin: 0 ;
padding: 0;
}
body{
position: relative;
}
#tooltip{
position: absolute;
}
ul li a img{
width: 50px;
}
#tooltip img{
width: 100px;
}
</style>
</head>
<body>
<ul>
<li><a href="images/hai-01.jpg" class="tooltip" title="苹果 ipod">
<img src="images/hai-01.jpg" alt="苹果 ipod">
</a></li>
<li><a href="images/gu-01.jpg" class="tooltip" title="鸭梨 ipod">
<img src="images/gu-01.jpg" alt="苹果 ipod">
</a></li>
</ul>
</body>
<script type="text/javascript" src="js/jquery-3.2.1.js"></script>
<script type="text/javascript">
$(function(){
var x=10;
var y=20;
$('a').mouseover(function(e){
this.mytitle=this.title;
this.title="";
var imgtitle=this.mytitle?"<br/>"+this.mytitle:"";
var tooltip="<div id='tooltip'><img src='"+this.href+"' alt='产品预览图'／>"+imgtitle+"</div>";
$('body').append(tooltip);
$('#tooltip').css({'top':(e.pageY+y)+'px','left':(e.pageX+x)+'px'}).show("fast")
}).mouseout(function() {
this.title=this.mytitle;
$("#tooltip").remove();
}).mousemove(function(e) {
$("#tooltip").css({'top':(e.pageY+y)+'px','left':(e.pageX+x)+'px'})
});
})
</script>
</html>
