JS另类放大镜 - 手册网

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引入JS
- 3.0.0 2.2.0 2.1.4 2.1.3 2.1.2 2.1.1 2.1.0 2.0.3 2.0.2 2.0.1 2.0.0 1.12.0 1.11.3 1.11.2 1.11.1 1.11.0 1.10.2 1.10.1 1.10.0 1.9.1 1.9.0 1.8.3 1.8.2 1.8.1 1.8.0 1.7.2 1.7.1 1.7 1.6.4 1.6.2 1.6.1 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0
- 1.7.3 1.7.2 1.7.1.0 1.7.0.0
- 2.0.0-beta.0 2.0.0-alpha.55 1.5.0-rc.0 1.4.8 1.4.0 1.3.20 1.2.29 1.1.5 1.0.8
- 1.8.3 1.7.0 1.6.0 1.5.2 1.4.4 1.3.3 1.2.4 1.1.7
- 1.10.4 1.9.7 1.8.10 1.7.8 1.6.3 1.5.4 1.4.6 1.3.3
- core1.6.0 core-compat1.6.0 core1.5.2 core-compat1.5.2 core-full-compat-yc1.4.5 core-full-compat1.4.5 core-full-nocompat-yc1.4.5 core-full-nocompat1.4.5
- 1.4.2 1.4.1 1.4.0 1.3.0 1.2.0 1.1.0
- 3.7.3 3.7.2 3.7.1 3.7.0 3.7 3.6.2 3.6.1 3.6

引入框架
- 1.4.5 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0 1.3.2
- 1.11.4 1.11.3 1.11.2 1.11.1 1.11.0 1.10.4 1.10.3 1.10.2
- 3.3.6 3.3.5 3.3.0 3.2.0 2.3.2

汉王

HTML代码

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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>JS另类放大镜</title>
<style>
ul,li{margin:0;padding:0;}
ul{list-style:none;}
.w960{
margin:0 auto;
width:960px;
border:1px solid #ccc;
border-right:none;
}
.pic-list{
width:960px;
overflow:hidden;
}
.pic-list .item{
float:left;
position:relative;
margin-left:-1px;
margin-bottom:-1px;
width:320px;
height:240px;
border-right:1px solid #ccc;
border-bottom:1px solid #ccc;
overflow:hidden;
}
.pic-list .item img{
position:absolute;
cursor:crosshair;
}
</style>
</head>
<body>
<div class="w960">
<ul class="pic-list" id="pic-list">
  <li class="item">
         <img src="//ku.shouce.ren/files/images/201601/56a34a1903d7e.jpg" width="320" height="240">
        </li>
        <li class="item">
         <img src="//ku.shouce.ren/files/images/201601/56a34a1a190aa.jpg" width="320" height="240">
        </li>
</ul>
</div>
<script>
(function(){
var d = document.getElementById("pic-list"),
     c = d.getElementsByTagName("li"),
  l = c.length,
  scale = 2;
function stopEvent(e){
  if(e && e.stopPropagation){
   e.stopPropagation();    
  }else{
   e.cancelBubble = true;
  }
}
for(var i = 0; i < l; i++){
  c[i].left = c[i].getBoundingClientRect().left;
  c[i].top = c[i].getBoundingClientRect().top;
  (function(i){
   c[i].onmouseover = function(e){
    var e = e || window.event;
    var img = this.getElementsByTagName("img")[0];
    img.style.width = img.offsetWidth * scale + "px";
    img.style.height = img.offsetHeight * scale + "px";
    img.style.left = (this.offsetWidth - img.offsetWidth) / 2 + "px";
    img.style.top = (this.offsetHeight - img.offsetHeight) / 2 + "px";
    this.dsx = Math.abs(parseInt(img.style.left));
    this.dsy = Math.abs(parseInt(img.style.top));
    this.cdx = this.offsetWidth / 2;
    this.cdy = this.offsetHeight / 2;
    this.left = (this.offsetWidth - img.offsetWidth) / 2
    this.top = (this.offsetHeight - img.offsetHeight) / 2
    stopEvent(e);
   };
   c[i].onmouseout = function(e){
    var e = e || window.event;
    var img = this.getElementsByTagName("img")[0];
    img.style.width = img.offsetWidth / scale + "px";
    img.style.height = img.offsetHeight / scale + "px";
    img.style.left = Math.floor((this.offsetWidth - img.offsetWidth) / 2) + "px";
    img.style.top = Math.floor((this.offsetHeight - img.offsetHeight) / 2) + "px";
    stopEvent(e);
   };
   c[i].onmousemove = function(e){
    var e = e || window.event;
    var img = this.getElementsByTagName("img")[0];
    var center = {"x":this.getBoundingClientRect().left + this.offsetWidth / 2,"y":this.getBoundingClientRect().top + this.offsetHeight / 2};
    var mPos = {"x":e.clientX,"y":e.clientY};
    var deltax = center.x - mPos.x,deltay = center.y - mPos.y;
    var dleft = deltax / this.cdx * this.dsx;
    var dtop = deltay / this.cdy * this.dsy;
    img.style.left = Math.floor(this.left + dleft) + "px";
    img.style.top = Math.floor(this.top + dtop) + "px";
    stopEvent(e);
   }
  })(i);
}
})();
</script>
</body>
</html>

CSS代码

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JS代码

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简介

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名称

JS另类放大镜

分类

图片代码

描述

JS另类网页放大镜，不需要额外加载图片，在原有图片大小的基础上放大，不过容易出现失真，但是设置好放大倍数很关键，鼠标移上图片，可看到图片被局部放大了，原生的JS代码，未使用流行的JS插件。