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
Mootools 1.2教程 输入过滤第二部分（字符串）
Sep 15 Javascript
HTA版JSMin（省略修饰语若干）基于javascript语言编写
Dec 24 Javascript
jquery animate实现鼠标放上去显示离开隐藏效果
Jul 21 Javascript
JavaScript限定图片显示大小的方法
Mar 11 Javascript
jQuery中通过ajax的get()函数读取页面的方法
Feb 29 Javascript
使用jquery.qrcode.min.js实现中文转化二维码
Mar 11 Javascript
AngularJs  Creating Services详解及示例代码
Sep 02 Javascript
javascript 数组去重复(在线去重工具)
Dec 17 Javascript
微信小程序（三）：网络请求
Jan 13 Javascript
ES5 ES6中Array对象去除重复项的方法总结
Apr 27 Javascript
JS构造一个html文本内容成文件流形式发送到后台
Jul 31 Javascript
JS面向对象编程实现的拖拽功能案例详解
Mar 03 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
1 Tube Radio(1) YB235(1) S2000(3) MX500(1) 再生机(1) 东方红(1) YB400(2) 直流胆(1) 森海(1) YB217(1)
You might like
随机头像PHP版
2006/10/09 PHP
PHP版 汉字转码的实现详解
2013/06/09 PHP
PHP设计模式之结构模式的深入解析
2013/06/13 PHP
php实现上传图片生成缩略图示例
2014/04/13 PHP
IE autocomplete internet explorer's autocomplete
2007/06/30 Javascript
JavaScript 学习笔记（十一）
2010/01/19 Javascript
JavaScript 输入框内容格式验证代码
2010/02/11 Javascript
教你如何使用firebug调试功能了解javascript闭包和this
2015/03/04 Javascript
JS传递对象数组为参数给后端,后端获取的实例代码
2016/06/28 Javascript
jquery.multiselect多选下拉框实现代码
2016/11/11 Javascript
fckeditor部署到weblogic出现xml无法读取及样式不能显示问题的解决方法
2017/03/24 Javascript
对Angular中单向数据流的深入理解
2018/03/31 Javascript
基于vue-ssr的静态网站生成器VuePress 初体验
2018/04/17 Javascript
详解javascript中的babel到底是什么
2018/06/21 Javascript
vue cli 3.0 搭建项目的图文教程
2019/05/17 Javascript
three.js利用gpu选取物体并计算交点位置的方法示例
2019/11/25 Javascript
Vue 实现分页与输入框关键字筛选功能
2020/01/02 Javascript
javascript将扁平的数据转为树形结构的高效率算法
2020/02/27 Javascript
vue实现tab栏点击高亮效果
2020/08/19 Javascript
python3使用urllib模块制作网络爬虫
2016/04/08 Python
python机器学习之神经网络（三）
2017/12/20 Python
python实现抠图给证件照换背景源码
2019/08/20 Python
python Pillow图像处理方法汇总
2019/10/16 Python
python GUI库图形界面开发之PyQt5树形结构控件QTreeWidget详细使用方法与实例
2020/03/02 Python
利用Python过滤相似文本的简单方法示例
2021/02/03 Python
CSS3 网页下拉菜单代码解释 中文翻译
2010/02/27 HTML / CSS
CSS3 绘制BMW logo实的现代码
2013/04/25 HTML / CSS
美国NBA官方商店：NBA Store
2019/04/12 全球购物
世界汽车零件：World Car Parts
2019/09/04 全球购物
Java基础面试题
2012/11/02 面试题
防灾减灾活动总结
2014/08/30 职场文书
后勤个人工作总结
2015/02/28 职场文书
2015年敬老院工作总结
2015/05/18 职场文书
企业廉洁教育心得体会
2016/01/20 职场文书
2016年学校党支部创先争优活动总结
2016/04/05 职场文书
互联网的下一个风口：新的独角兽将诞生
2019/08/02 职场文书