首页
所有分类
TAGS
文字工具 EMOJI BIBLE
编程 Javascript

原生js实现放大镜效果

Posted in Javascript onJanuary 11, 2017

话不多说，请看代码

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>放大镜-原生js封装</title>
 <link rel="shortcut icon" href="../public/image/favicon.ico" type="images/x-icon"/>
 <link rel="icon" href="../public/image/favicon.png" type="images/png"/>
 <link rel="stylesheet" type="text/css" href="../public/style/cssreset-min.css">
 <link rel="stylesheet" type="text/css" href="../public/style/common.css">
 <style type="text/css">
 /*公共*/
 html{
 height:100%;
 }
 body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td {
 margin: 0;
 padding: 0
 }
 body{
 position: relative;
 min-height:100%;
 font-size:14px;
 font-family: Tahoma, Verdana,"Microsoft Yahei";
 color:#333;
 }
 a{
 text-decoration: none;
 color:#333;
 }
 .header{
 width: 960px;
 padding-top: 15px;
 margin: 0 auto;
 line-height: 30px;
 text-align: right;
 }
 .header a{
 margin: 0 5px;
 }
 .main{
 width:960px;
 margin: 50px auto 0;
 }
 .code{
 border:1px dashed #e2e2e2;
 padding:10px 5px;
 margin-bottom:25px;
 }
 pre {
 font-family: "Microsoft Yahei",Arial,Helvetica;
 white-space: pre-wrap; /*css-3*/ 
 white-space: -moz-pre-wrap; /*Mozilla,since1999*/ 
 white-space: -pre-wrap; /*Opera4-6*/ 
 white-space: -o-pre-wrap; /*Opera7*/ 
 word-wrap: break-word; /*InternetExplorer5.5+*/
 }
 .example{
 padding-top:40px;
 margin-bottom:90px;
 }
 .example .call{
 padding:18px 5px;
 background:#f0f5f8;
 }
 .example h2{
 padding-top:20px;
 margin-bottom:7px;
 }
 .example table {
 width:100%;
 table-layout:fixed;
 border-collapse: collapse;
 border-spacing: 0;
 border: 1px solid #cee1ee;
 border-left: 0;
 }
 .example thead {
 border-bottom: 1px solid #cee1ee;
 background-color: #e3eef8;
 }
 .example tr {
 line-height: 24px;
 font-size: 13px;
 }
 .example tr:nth-child(2n) {
 background-color: #f0f5f8;
 }
 .example tr th,.example tr td {
 border-left: 1px solid #cee1ee;
 word-break: break-all;
 word-wrap: break-word;
 padding:0 10px;
 font-weight: normal;
 }
 .example tr th {
 color: #555;
 padding-top: 2px;
 padding-bottom: 2px;
 text-align: left;
 }
 /*公共*/
 .magnifier-box{
 margin-bottom: 15px;
 }
 .magnifier-container{
 width: 400px;
 height: 255px;
 margin: 50px;
 position: relative;
 border: 1px solid #ccc;
 }
 .magnifier-small{
 position: relative;
 z-index: 1;
 width: 100%;
 height: 100%;
 overflow: hidden;
 }
 .magnifier-small img{
 /*max-width: 100%;
 max-height: 100%;*/
 }
 .magnifier-mark {
 position: absolute;
 display: block;
 width: 400px;
 height: 255px;
 background-color: #fff;
 filter: alpha(opacity:0);
 opacity: 0;
 z-index: 10;
 }
 .magnifier-float-box {
 display: none;
 width: 160px;
 height: 120px;
 position: absolute;
 background: #ffffcc;
 border: 1px solid #ccc;
 filter: alpha(opacity:50);
 opacity: 0.5;
 }
 .magnifier-big-box {
 display: none;
 position: absolute;
 top: 0;
 left: 460px;
 width: 400px;
 height: 300px;
 overflow: hidden;
 border: 1px solid #ccc;
 z-index: 1;
 }
 .magnifier-big-box img {
 position: absolute;
 z-index: 5;
 }
 .magnifier-thumb{}
 .magnifier-thumb li{
 display: inline-block;
 width: 50px;
 height: 50px;
 vertical-align: middle;
 line-height: 50px;
 margin-right: 5px;
 border: 2px solid #fff;
 /*display: table-cell;*/
 }
 .magnifier-thumb li.active{
 border-color: #f40;
 }
 .magnifier-thumb li img{
 max-width: 50px;
 max-height: 50px;
 vertical-align: middle;
 }
 </style>
 <script type="text/javascript">
 /*封装代码*/
 (function() {
 var Magnifier = function(el, opts) {
 var self = this;
 var defaults = {
 event: "mouseover",
 }
 opts = opts || {};
 for (var w in defaults) {
 if ("undefined" == typeof opts[w]) {
  opts[w] = defaults[w];
 }
 }
 this.params = opts;
 this.container = r(el);
 if (this.container.length > 1) {
 var x = [];
 return this.container.each(function() {
  x.push(new Magnifier(this, opts))
 }), x
 }
 this.containers = this.container[0];
 this.contbox = this.container.find(".magnifier-container")[0];
 this.conmain = this.container.find(".magnifier-container")[0];
 this.init();
 }
 Magnifier.prototype = {
 init: function() {
 var self = this;
 this.rendDom();
 this.mark = this.container.find(".magnifier-mark")[0];
 this.float_box = this.container.find(".magnifier-float-box")[0];
 this.big_box = this.container.find(".magnifier-big-box");
 this.small = this.container.find(".magnifier-small")[0];
 this.big_Image = this.big_box.find("img")[0];
 this.event();
 },
 //渲染dom
 rendDom: function() {
 var self = this;
 var initimg = this.container.find(".magnifier-thumb li img")[0].getAttribute("src");
 var initimgs = this.container.find(".magnifier-thumb li img")[0].getAttribute("data-source");
 var small = document.createElement("div");
 small.className = "magnifier-small";
 var mark = document.createElement("div");
 mark.className = "magnifier-mark";
 var float = document.createElement("div");
 float.className = "magnifier-float-box";
 var img = document.createElement("img");
 img.setAttribute("src", initimg)
 small.appendChild(mark);
 small.appendChild(float);
 small.appendChild(img);
 var big_box = document.createElement("div");
 big_box.className = "magnifier-big-box";
 var boximg = document.createElement("img");
 boximg.setAttribute("src", initimgs);
 big_box.appendChild(boximg);
 this.conmain.appendChild(small);
 this.conmain.appendChild(big_box);
 this.boximg = this.container.find(".magnifier-small img")[0];
 this.tabimg();
 },
 //执行切换图片
 tabimg: function() {
 var self = this;
 this.tabimgs = this.conmain = this.container.find(".magnifier-thumb li");
 for (var i = 0; i < this.tabimgs.length; i++) {
  self.tabimgs[i].addEventListener(this.params.event, function() {
  for (var j = 0; j < self.tabimgs.length; j++) {
  self.tabimgs[j].className = "";
  }
  this.className = "active";
  var onec = this.children[0].getAttribute("src");
  var onecd = this.children[0].getAttribute("data-source");
  self.change(onec, onecd);
  }, false);
 }
 },
 //改变大小图片
 change: function(o, b) {
 this.boximg.setAttribute("src", o);
 this.big_Image.setAttribute("src", b);
 },
 //执行初始化鼠标事件
 event: function() {
 var self = this;
 self.mark.addEventListener('mouseover', function() {
  self.float_box.style.display = "block";
  self.big_box[0].style.display = "block";
 }, false);
 self.mark.addEventListener('mouseout', function() {
  self.float_box.style.display = "none";
  self.big_box[0].style.display = "none";
 }, false);
 self.mark.addEventListener('mousemove', function(e) {
  var e = e || window.event; //兼容多个浏览器的event参数模式
  self.moveevent(e)
 }, false);
 },
 //开始移动
 moveevent: function(e) {
 var self = this;
 var left = e.clientX - this.contbox.offsetLeft - this.small.offsetLeft - this.float_box.offsetWidth / 2;
 var top = e.clientY - this.contbox.offsetTop - this.small.offsetTop - this.float_box.offsetHeight / 2;
 if (left < 0) {
  left = 0;
 } else if (left > (this.mark.offsetWidth - this.float_box.offsetWidth)) {
  left = this.mark.offsetWidth - this.float_box.offsetWidth;
 }
 if (top < 0) {
  top = 0;
 } else if (top > (this.mark.offsetHeight - this.float_box.offsetHeight)) {
  top = this.mark.offsetHeight - this.float_box.offsetHeight;
 }
 this.float_box.style.left = left + "px";
 this.float_box.style.top = top + "px";
 var percentX = left / (this.mark.offsetWidth - this.float_box.offsetWidth);
 var percentY = top / (this.mark.offsetHeight - this.float_box.offsetHeight);
 this.big_Image.style.left = -percentX * (this.big_Image.offsetWidth - this.big_box[0].offsetWidth) + "px";
 this.big_Image.style.top = -percentY * (this.big_Image.offsetHeight - this.big_box[0].offsetHeight) + "px";
 }
 }
 var r = (function() {
 var e = function(e) {
 var a = this,
  t = 0;
 for (t = 0; t < e.length; t++) {
  a[t] = e[t];
 }
 return a.length = e.length, this
 };
 e.prototype = {
 addClass: function(e) {
  if ("undefined" == typeof e) return this;
  for (var a = e.split(" "), t = 0; t < a.length; t++)
  for (var r = 0; r < this.length; r++) this[r].classList.add(a[t]);
  return this
 },
 each: function(e) {
  for (var a = 0; a < this.length; a++) e.call(this[a], a, this[a]);
  return this
 },
 html: function(e) {
  if ("undefined" == typeof e) return this[0] ? this[0].innerHTML : void 0;
  for (var a = 0; a < this.length; a++) this[a].innerHTML = e;
  return this
 },
 find: function(a) {
  for (var t = [], r = 0; r < this.length; r++)
  for (var i = this[r].querySelectorAll(a), s = 0; s < i.length; s++) t.push(i[s]);
  return new e(t)
 },
 append: function(a) {
  var t, r;
  for (t = 0; t < this.length; t++)
  if ("string" == typeof a) {
  var i = document.createElement("div");
  for (i.innerHTML = a; i.firstChild;) this[t].appendChild(i.firstChild)
  } else if (a instanceof e)
  for (r = 0; r < a.length; r++) this[t].appendChild(a[r]);
  else this[t].appendChild(a);
  return this
 },
 }
 var a = function(a, t) {
 var r = [],
  i = 0;
 if (a && !t && a instanceof e) {
  return a;
 }
 if (a) {
  if ("string" == typeof a) {
  var s, n, o = a.trim();
  if (o.indexOf("<") >= 0 && o.indexOf(">") >= 0) {
  var l = "div";
  for (0 === o.indexOf("<li") && (l = "ul"), 0 === o.indexOf("<tr") && (l = "tbody"), (0 === o.indexOf("<td") || 0 === o.indexOf("<th")) && (l = "tr"), 0 === o.indexOf("<tbody") && (l = "table"), 0 === o.indexOf("<option") && (l = "select"), n = document.createElement(l), n.innerHTML = a, i = 0; i < n.childNodes.length; i++) r.push(n.childNodes[i])
  } else
  for (s = t || "#" !== a[0] || a.match(/[ .<>:~]/) ? (t || document).querySelectorAll(a) : [document.getElementById(a.split("#")[1])], i = 0; i < s.length; i++) s[i] && r.push(s[i])
  } else if (a.nodeType || a === window || a === document) {
  r.push(a);
  } else if (a.length > 0 && a[0].nodeType) {
  for (i = 0; i < a.length; i++) {
  r.push(a[i]);
  }
  }
 }
 return new e(r)
 };
 return a;
 }())
 window.magnifier = Magnifier;
 })()
 /*封装代码*/
 </script>
</head>
<body>
 <div class="header">
 <a href="https://github.com/huanghanzhilian/widget" target="_blank">项目地址</a>
 <a href="/widget/">返回首页</a>
 </div>
 <div class="main">
 <div class="magnifier-box" id="magnifier1">
 <div class="magnifier-container"></div>
 <ul class="magnifier-thumb">
 <li class="active">
 <img src="http://www.huanghanlian.com/widget/magnifier/img/c2.jpg" data-source="http://www.huanghanlian.com/widget/magnifier/img/c2a.jpg">
 </li>
 <li>
 <img src="http://www.huanghanlian.com/widget/magnifier/img/macbook-small.jpg" data-source="http://www.huanghanlian.com/widget/magnifier/img/macbook-big.jpg">
 </li>
 </ul>
 </div>
 <script type="text/javascript">
 new magnifier("#magnifier1");
 </script>
 <div class="code">
 <p>
 不传参数，执行默认参数，鼠标经过预览图切换
 </p>
 <p>new magnifier("#magnifier1");</p><br/>
 <p>
 event:"click"，点击预览图切换图片，默认"mouseover" 执行默认参数
 </p>
 <p>new magnifier("#magnifier1",{
 event:"click"
 });</p>
 </div>
 <div class="example">
 <div class="call">
 <h1>调用方法：</h1>
 <p>new magnifier(selector,{options});</p>
 </div>
 <h2>options参数</h2>
 <table>
 <thead>
 <tr>
 <th width="150">参数</th>
 <th width="100">默认值</th>
 <th>说明</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td>event</td>
 <td>"mouseover"</td>
 <td>可设置鼠标点击"click"</td>
 </tr>
 </tbody>
 </table>
 </div>
 </div>
</body>
</html>

以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持三水点靠木！

原生js实现放大镜效果

- Author -

继小鹏

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

Javascript 相关文章推荐
Jquery实现无刷新DropDownList联动实现代码
Mar 08 Javascript
JS解决ie6下png透明的方法实例
Aug 02 Javascript
点击弹出层外区域关闭弹出层jquery特效示例
Aug 25 Javascript
jqueyr判断checkbox组的选中(示例代码)
Nov 08 Javascript
js中一个函数获取另一个函数返回值问题探讨
Nov 21 Javascript
全面了解addEventListener和on的区别
Jul 14 Javascript
AngularJs bootstrap搭载前台框架——js控制部分
Sep 01 Javascript
yii form 表单提交之前JS在提交按钮的验证方法
Mar 15 Javascript
浅谈vue项目优化之页面的按需加载(vue+webpack)
Dec 11 Javascript
javascript 通过键名获取键盘的keyCode方法
Dec 31 Javascript
vue-router跳转时打开新页面的两种方法
Jul 29 Javascript
layui点击数据表格添加或删除一行的例子
Sep 12 Javascript
微信小程序 高德地图SDK详解及简单实例（源码下载）
Jan 11 #Javascript
微信小程序开发经验总结（推荐）
Jan 11 #Javascript
bootstrap手风琴制作方法详解
Jan 11 #Javascript
el表达式 写入bootstrap表格数据页面的实例代码
Jan 11 #Javascript
微信小程序 本地存储及登录页面处理实例详解
Jan 11 #Javascript
js仿iphone秒表功能 计算平均数
Jan 11 #Javascript
jQuery实现限制文本框的输入长度
Jan 11 #Javascript
list(1) 进销存(1) metaclass(1) enumerate(1) 自动化(1) zip(1) find(1) pytest(3) csv(4) gevent(1)
You might like
将PHP作为Shell脚本语言使用
2006/10/09 PHP
回答PHPCHINA上的几个问题:URL映射
2007/02/14 PHP
PHP 输出缓存详解
2009/06/20 PHP
apache+php+mysql安装配置方法小结
2010/08/01 PHP
php递归实现无限分类的方法
2015/07/28 PHP
thinkPHP5实现的查询数据库并返回json数据实例
2017/10/23 PHP
PHP实现图片压缩
2020/09/09 PHP
仿服务器端脚本方式的JS模板实现方法
2007/04/27 Javascript
10款非常有用的 Ajax 插件分享
2012/03/14 Javascript
JS批量修改PS中图层名称的方法
2014/01/26 Javascript
javascript的函数作用域
2014/11/12 Javascript
jQuery实现跨域
2015/02/03 Javascript
javascript最基本的函数汇总
2015/06/25 Javascript
jQuery插件fullPage.js实现全屏滚动效果
2016/12/02 Javascript
微信小程序 WebSocket详解及应用
2017/01/21 Javascript
javascript常用的设计模式
2017/02/09 Javascript
AngularJS折叠菜单实现方法示例
2017/05/18 Javascript
Nodejs之TCP服务端与客户端聊天程序详解
2017/07/07 NodeJs
JS实现前端缓存的方法
2017/09/21 Javascript
自定义Vue中的v-module双向绑定的实现
2019/04/17 Javascript
JS实现图片切换特效
2019/12/23 Javascript
python开发之for循环操作实例详解
2015/11/12 Python
Python实现读取SQLServer数据并插入到MongoDB数据库的方法示例
2018/06/09 Python
Python定时器线程池原理详解
2020/02/26 Python
python使用re模块爬取豆瓣Top250电影
2020/10/20 Python
flask框架中的cookie和session使用
2021/01/31 Python
html5 Canvas画图教程(10)—把面拆成线条模拟出圆角矩形
2013/01/09 HTML / CSS
HomeAway澳大利亚：预订你的度假屋，公寓、度假村、别墅等
2019/02/20 全球购物
Tom Dixon官网：英国照明及家具设计和制造公司
2019/03/01 全球购物
Pedro官网：新加坡时尚品牌
2019/08/27 全球购物
介绍一下javax.servlet.Servlet接口及其主要方法
2015/11/30 面试题
交通法规咨询中心工作职责
2013/11/27 职场文书
给交警的表扬信
2014/01/12 职场文书
小学生感恩演讲稿
2014/04/25 职场文书
助学贷款贫困证明
2014/09/23 职场文书
上班迟到检讨书300字
2014/10/18 职场文书