Js图片放大镜（面向对象技术）

小提示

Ctrl+/代码提示(需IE11)
F11键放大 ESC键缩小
PgUp上页 PgDn下页

推荐代码

运行代码缩小

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

复制格式化注释注释清空

放大

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>·&Aring;&acute;ó&frac34;&micro;&ETH;§&sup1;&ucirc;</title>
<style type="text/css"> 
body {
	margin:0px;
	padding:0px;
}
.box {
	width:434px;
	height:292px;
	margin:10px auto;
}
.left {
	width:202px;
	height:282px;
	float:left;
	padding:2px;
	position:relative;
	border:3px solid #ccc;
}
.left img {
	float:left;
	border:1px solid #7b7b7b;
}
.left .move {
	width:50px;
	height:50px;
	background:#666;
	opacity:0.3;
	top:3px;
	left:3px;
	position:absolute;
	z-index:1;
	display:none;
	filter: alpha(opacity: 30);
	border:1px solid #000;
}
.left .mask {
	width:100%;
	height:100%;
	opacity:0;
	top:0px;
	left:0px;
	position:absolute;
	z-index:2;
	background:#000;
	cursor:move;
	filter:alpha(opacity: 0);
}
.right {
	width:202px;
	height:282px;
	float:left;
	padding:2px;
	overflow:hidden;
	display:inline;
	position:relative;
	margin:0 0 0 10px;
	display:none;
	border:3px solid #ccc;
}
.right img {
	position:absolute;
	top:0px;
	left:0px;
}
</style>
<script type="text/javascript">
//获取id
function $(id){
	return typeof id === "string" ? document.getElementById(id) : id;
}

//获取tagName
function $$(oParent, elem){
	return (oParent || document).getElementsByTagName(elem);
}

//获取className
function $$$(oParent, sClass){
	var aElem = $$(oParent, '*');
	var aClass = [];
	var i = 0;
	for(i=0;i<aElem.length;i++)if(aElem[i].className == sClass)aClass.push(aElem[i]);
	return aClass;
}

//初始化对象
function magnifier(){
	this.initialize.apply(this, arguments);
}

magnifier.prototype = {
	initialize : function(){
		var _this = this;
		if($('box')){
			this.oBox = $('box');
			this.oLeft = $$$(this.oBox, 'left')[0];
			this.oMove = $$$(this.oBox, 'move')[0];
			this.oMask = $$$(this.oBox, 'mask')[0];
			this.oLimg = $$(this.oLeft, 'img')[0];
			this.oRight = $$$(this.oBox, 'right')[0];
			this.oRimg = $$(this.oRight, 'img')[0];
			this.oMask.onmouseover = function(){
				_this.mouseover();
			};
			this.oMask.onmousemove = function(e){
				_this.mousemove(e);
			};
			this.oMask.onmouseout = function(){
				_this.mouseout();
			};
		}
	},
	mouseover : function(){
		this.oMove.style.display = 'block';
		this.oRight.style.display = 'block';
	},
	mousemove : function(e){
		this.oEvent = e || event;
		this.left = (this.oEvent.clientX - this.oBox.offsetLeft) - this.oMove.offsetWidth / 2;
		this.top = (this.oEvent.clientY - this.oBox.offsetTop) - this.oMove.offsetHeight / 2;
		this.margin();
		this.oMove.style.left = this.left + 'px';
		this.oMove.style.top = this.top + 'px';
		this.bigImg();
		
	},
	mouseout : function(){
		this.oMove.style.display = 'none';
		this.oRight.style.display = 'none';
	},
	margin : function(){
		this.marightW = this.oMask.offsetWidth - this.oMove.offsetWidth;
		this.marightH = this.oMask.offsetHeight - this.oMove.offsetHeight;
		if(this.left < 3){
			this.left = 3;
		}else if(this.left > this.marightW - 3){
			this.left = this.marightW - 3;
		}
		if(this.top < 3){
			this.top = 3;
		}else if(this.top > this.marightH - 3){
			this.top = this.marightH - 3;
		}
	},
	bigImg : function(){
		this.bigW = this.oMask.offsetWidth - this.oMove.offsetWidth;
		this.bigH = this.oMask.offsetHeight - this.oMove.offsetHeight;
		this.bigX = this.left / (this.bigW);
		this.bigY = this.top / (this.bigH);
		this.oRimg.style.left = -this.bigX * (this.bigW) +'px'
		this.oRimg.style.top = -this.bigY * (this.bigH) +'px'
	}
};
</script>
<script type="text/javascript"> 
window.onload = function(){
	new magnifier();
};
</script>
</head>
<body>
<div class="box" id="box">
	<div class="left">
    	<span class="move"></span>
        <span class="mask"></span>
    	<img src="//ku.shouce.ren/files/images/201601/56a34b597c58b.jpg" />
    </div>
    <div class="right"><img src="//ku.shouce.ren/files/images/201601/56a34b5b6dc4b.jpg" /></div>
</div>
</body>
</html>

CSS代码

复制格式化注释注释颜色清空

放大

JS代码

复制格式化注释注释清空

放大

运行代码

简介

请输入代码名称！

名称

Js图片放大镜（面向对象技术）

分类

图片代码

描述

一款JavaScript放大镜，基于面向对象的编程思想实现，本放大镜效果属于局部放大，放大的区域要比原图的选定区域还要大，如果效果不是你想要的，可根据你的需要，自己可以修改。