下面代码是何杰同学写的
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
<style type="text/css">
*{margin:0px;
padding:0px;}
.img{
width: 350px;
height: 350px;
border: 1px solid #ccc;
margin: 100px;
position: relative;
cursor:move;
}
.bimg{
position: relative;
top: -400px;
left: 500px;
border: 1px solid #ccc;
width: 400px;
height: 400px;
overflow: hidden;
display: none;
}
#move{
position: absolute;
width: 100px;
height: 100px;
background-color: rgba(8,152,202,0.2);
top: 0px;
left: 0px;
display: none;
}
.simg{
width: 350px;
height: 350px;
}
.bimg>img{
position: absolute;
left: 0px;
top: 0px;
}
</style>
</head>
<body>
<div class="img">
<div class="simg"><!--小图片-->
<img src="2.jpg" style="width:350px;height: 350px;" />
<div id="move"></div><!--放大区域-->
</div>
<div class="bimg"><!--大图片-->
<img src="2.jpg" style="width:1400px;height: 1400px;" />
</div>
</div>
<script>
$(document).ready(function(){
//鼠标移动到图片显示，移除隐藏
$(".img").hover(function(){
$(".bimg").css("display","block");
$("#move").css("display","block");
},function(){
$(".bimg").css("display","none");
$("#move").css("display","none");
});
//放大区域移动，大图片移动
$(".img").mousemove(function(event){
var x = event.pageX;
var y = event.pageY;
var nx = x - $(".img").offset().left-$("#move").width()/2;
var ny = y - $(".img").offset().top-$("#move").height()/2;
if(nx < 0){
nx = 0;
}
if(nx > $(".img").width()-$("#move").width()){
nx = $(".img").width()-$("#move").width();
}
if(ny < 0){
ny = 0;
}
if(ny > $(".img").height()-$("#move").height()){
ny = $(".img").height()-$("#move").height();
}
$("#move").css({
left:nx+"px",
top:ny+"px"
});
$(".bimg>img").css({
left:-nx*$(".bimg").width()/$("#move").width()+"px",
top:-ny*$(".bimg").height()/$("#move").height()+"px"
});
})
});
</script>
</body>
</html>
