基本信息
源码名称：JS实现放大镜效果
源码大小：0.93M
文件格式：.rar
开发语言：js
更新时间：2018-06-04
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源码介绍
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>JS实现放大镜查看大图效果</title>
<style>
*{
margin:0;
padding:0;
}
#product{
position:relative;
width:100%;
height:640px;
}
.mid-box{
position:absolute;
top:10px;
left:10px;
float:left;
width:350px;
height:449px;
border:1px solid #747474;
text-align:center;
vertical-align:middle;
z-index:5;
}
.mid-box > img{
position:absolute;
top:0;
left:0;
}
.mid-box .move-slider{
display:none;
position:absolute;
top:0;
left:-50%;
width:175px;
height:50%;
background-color:rgba(234,218,147,.6);
cursor:move;
z-index:10;
}
.small-box{
position:absolute;
left:20px;
bottom:113px;
width:380px;
height:64px;
}
.small-box li{
list-style-type:none;
float:left;
height:64px;
margin-right:6px;
}
.small-box li.on{
border:1px solid red;
}
.big-box{
display:none;
position:absolute;
top:10px;
left:368px;
float:left;
overflow:hidden;
width:400px;
height:513px;
border:1px solid #747474;
z-index:5;
}
.big-box .bigImg{
position:relative;
top:0px;
left:0px;
}
</style>
<script type="text/javascript">
window.onload=function(){
var productBox=document.getElementById("product");
var midBox=productBox.getElementsByClassName("mid-box")[0];
var bigBox=productBox.getElementsByClassName("big-box")[0];
var moveSlider=productBox.getElementsByClassName("move-slider")[0];
var midImg=productBox.getElementsByTagName("img")[0];
var smallImg=productBox.getElementsByTagName("li");
var bigImg=productBox.getElementsByClassName("bigImg")[0];
for(var i=0;i<smallImg.length;i ){
smallImg[i].onmouseover=function(){
for(var j=0;j<smallImg.length;j ){
smallImg[j].className='';
}
this.className='on';
midImg.src=this.getAttribute('data-mid');
bigImg.src= this.getAttribute('data-big');
}
}
midBox.onmouseenter=function(){
moveSlider.style.display="block";
bigBox.style.display="block";
}
midBox.onmouseleave=function(){
moveSlider.style.display="none";
bigBox.style.display="none";
}
function pos(e){
var scrollTop=document.documentElement.scrollTop || document.body.scrollTop;
var scrollLeft=document.documentElement.scrollLeft || document.body.scrollLeft;
return json={x:scrollLeft e.clientX,y:scrollTop e.clientY};
}
midBox.onmousemove=function(e){
var e=e || event;//事件源的兼容问题
var midBox_top=midBox.offsetTop;
var midBox_left=midBox.offsetLeft;
var disX=pos(e).x-midBox_left;
var disY=pos(e).y-midBox_top;
var move_top=disY-moveSlider.offsetHeight/2;
var move_left=disX-moveSlider.offsetWidth/2;
var max_top=midBox.offsetHeight-moveSlider.offsetHeight;
var max_left=midBox.offsetWidth-moveSlider.offsetWidth;
var bigmax_top=bigImg.offsetHeight-bigBox.offsetHeight;
var bigmax_left=bigImg.offsetWidth-bigBox.offsetWidth;
move_top=move_top<=0 ? 0 : move_top;
move_top=move_top>=max_top ? max_top : move_top;
move_left=move_left<=0 ? 0 : move_left;
move_left=move_left>=max_left ? max_left : move_left;
moveSlider.style.top=move_top 'px';
moveSlider.style.left=move_left 'px';
var scaleX=move_left/max_left;
var scaleY=move_top/max_top;
var bigimg_top=bigmax_top*scaleY;
var bigimg_left=bigmax_left*scaleX;
bigImg.style.top=-bigimg_top 'px';
bigImg.style.left=-bigimg_left 'px';
}
}
</script>
</head>
<body>
<div id="product">
<!--中图区域-->
<div class="mid-box">
<img src="images/mid1.jpg" alt="" width="100%" height="100%">
<div class="move-slider"></div>
</div>
<!--小图区域-->
<div class="small-box">
<ul>
<li class="on" data-mid="images/mid1.jpg" data-big="images/big1.jpg">
<img src="images/small1.jpg" alt="" width="50" height="64">
</li>
<li data-mid="images/mid2.jpg" data-big="images/big2.jpg">
<img src="images/small2.jpg" alt="" width="50" height="64">
</li>
<li data-mid="images/mid3.jpg" data-big="images/big3.jpg">
<img src="images/small3.jpg" alt="" width="50" height="64">
</li>
<li data-mid="images/mid4.jpg" data-big="images/big4.jpg">
<img src="images/small4.jpg" alt="" width="50" height="64">
</li>
<li data-mid="images/mid5.jpg" data-big="images/big5.jpg">
<img src="images/small5.jpg" alt="" width="50" height="64">
</li>
<li data-mid="images/mid6.jpg" data-big="images/big6.jpg">
<img src="images/small6.jpg" alt="" width="50" height="64">
</li>
</ul>
</div>
<!--大图区域-->
<div class="big-box">
<img class="bigImg" src="images/big1.jpg" alt="" width="800" height="1026">
</div>
</div>
</body>
</html>