本文实例介绍了js焦点图片层叠轮播切换滚动效果，分享给大家供大家参考，具体内容如下
效果图：
功能描述：
自定义图片尺寸； 每隔一段时间自动滚动图片； 每次动画执行的时候改变图片的位置，宽高以及其它属性也要跟随着变化； 鼠标移上图片，显示当前图片的详细信息； 点击按钮向前向后滚动；
详细代码:
html代码:
<!DOCTYPE html> <> <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title></title> <style type="text/css"> *{margin:0px; padding:0px;font-family:"Microsoft YaHei"} ol,ul{list-style:none;} cite,em,i{font-style:normal} * html .clearfix { height: 1%; } .clearfix { display: block; } .myclearfix:after { clear:both; visibility:hidden;} .myclearfix { display: block; _display:inline-block; overflow:hidden;} #largerImages{position:relative;width:1000px;margin:0 auto;height:520px;overflow:hidden;} #largerImages li{box-shadow:1px 1px 12px rgba(200, 200, 200, 1);width:368px;height:368px; position:absolute;top:10px;overflow:hidden;color:#fff;} #largerImages li .cover{background-color:#333;opacity:0.5;filter: progid:DXImageTransform.Microsoft.Alpha(opacity=50);height:100%;width:100%;display:block;position:absolute;top:0px;} #largerImages img{border:0px;width:100%;height:100%;} #largerImages .previous{left:13%;} #largerImages .next{left:53%;} #largerImages .previous,#largerImages .next{cursor:pointer; position:absolute;z-index:100; top:25%;height:60px;line-height:60px;width:30px;color:#fff;text-align:center;} #largerImages .previous span,#largerImages .next span{position:absolute;top:0px;left:0px;height:100%;width:100%;display:block;background-color:#000;opacity:0.4;filter: progid:DXImageTransform.Microsoft.Alpha(opacity=40);} #largerImages .previous em,#largerImages .next em{height:100%;width:100%;display:block;position:absolute;top:0px;left:0px;font-size:26px; font-family: "宋体";} #largerImages li span,#largerImages li em{position:absolute;left:0px;width:100%;height:30px;line-height:30px; bottom:0px;text-align:center;display:block;color:#fff;} #largerImages li span{background-color:#000;opacity:0.5;filter: progid:DXImageTransform.Microsoft.Alpha(opacity=50);font-size:12px;} </style> </head> <body> <ul id = "largerImages"> <p><span></span><em><</em></p> <p><span></span><em>></em></p> <li><i></i> <a href="#"><img src="http://xiu.xiuimg.com/upload/xiu/9/90/qq-srntbvlhcw_b_56.com_160106133546.jpg"></a> <p><span></span><em>主播昵称</em></p> </li> <li><i></i> <a href="#"><img src="http://xiu.xiuimg.com/upload/xiu/96/58/dc15170219625_b_56.com_151201150445.jpg"></a> <p><span></span><em>主播昵称</em></p> </li> <li><i></i> <a href="#"><img src="http://xiu.xiuimg.com/upload/xiu/9/90/qq-srntbvlhcw_b_56.com_160106133546.jpg"></a> <p><span></span><em>主播昵称</em></p> </li> <li><i></i> <a href="#"><img src="http://xiu.xiuimg.com/upload/xiu/96/58/dc15170219625_b_56.com_151201150445.jpg"></a> <p><span></span><em>主播昵称</em></p> </li> <li><i></i> <a href="#"><img src="http://xiu.xiuimg.com/upload/xiu/9/90/qq-srntbvlhcw_b_56.com_160106133546.jpg"></a> <p><span></span><em>主播昵称</em></p> </li> </ul> <script type="text/javascript" src="../../lib/seajs/sea.js"></script> <script type="text/javascript" src="../../lib/base/1.0.x/base.js"></script> <script type="text/javascript"> seajs.use(['lib/jquery/1.11.x/index.js','_example/rotateBox/index.js'],function($,carousel) { carousel.init({ wapper: $('#largerImages'), //所有图片以此来按比例定义宽高 imgWidth: 450, imgHeight: 300, spacing: { left: 60, //每张图片左边距离相差多少 top: 30, //每张图片顶部距离相差多少 width: 60, //每张图片宽度相差多少 height: 60 //每张图片高度相差多少 } }); }); </script> </body> </html>
js 代码:
define(function(require, exports, module) { 'use strict'; var $ = require('lib/jquery/1.11.x/index.js'); var carousel = { _initData:false, //判断动画是否执行完毕 init: function(options) { var t = this; t._wapper = options.wapper; t._grids = t._wapper.find('li'); t._gridsWidth = options.imgWidth; t._gridsHeight = options.imgHeight; t._spacing = options.spacing; //取居中图片 t._middle = t._grids.length % 2 == 0 ? t._grids.length / 2 : parseInt(t._grids.length / 2); //存放各图片参数 t._arr = { left: [], top: [], zIndex: [], width: [], height: [] } if ( !t._initData ) { var interval; interval = setInterval(function(){ $('.previous').click(); },10000); } t._largerImages(); t._reposition(); t._mouseEnter(t._grids) //鼠标移动上去显示主播昵称 }, //初始化定位： _largerImages: function() { var t = this; var front = t._middle; var avtive = t._middle; var last = t._grids.length; t._grids.each( function(i, img) { if (i == t._middle) { t._grids.eq(i).css({ zIndex: 99, top: 0, left: t._spacing.left * i, height: t._gridsHeight, width: t._gridsWidth }); } else if ( i < t._middle ) { t._grids.eq(i).css({ zIndex: i, top: t._spacing.top * front, left: t._spacing.left * i, height: t._gridsHeight - t._spacing.height * front, width: t._gridsWidth - t._spacing.width * front }); front--; } else { last --; t._grids.eq(last).css({ zIndex: i, top: t._spacing.top * avtive, left: t._spacing.left * last + t._spacing.width * avtive, height: t._gridsHeight - t._spacing.height * avtive, width: t._gridsWidth - t._spacing.width * avtive }); avtive --; }; }); }, //翻页动画 _reposition: function() { var t = this; //把各属性值传到数组里面 t._grids.each( function(i,img) { t._arr.left.push(t._grids.eq(i).position().left); t._arr.top.push(t._grids.eq(i).position().top); t._arr.width.push(t._grids.eq(i).width()); t._arr.height.push(t._grids.eq(i).height()); t._arr.zIndex.push(t._grids.eq(i).css('z-index')); }); //向前翻页 $('.previous').bind('click',function() { if ( !t._initData && t._arr.left.length != 0) { t._initData = true; //重新获取选择器 var grids = t._wapper.find('li'); for (var i = 1; i < grids.length ; i ++) { grids.eq(i).animate({ zIndex: t._arr.zIndex[i - 1], left: t._arr.left[i - 1], top: t._arr.top[i - 1], width: t._arr.width[i - 1], height: t._arr.height[i - 1], },200, function() { t._initData = false; grids.find('i').addClass('cover'); grids.eq(t._middle + 1).find('i').removeClass('cover'); }); }; grids.eq(0).animate({ left: t._arr.left[ grids.length - 1], top: t._arr.top[ grids.length - 1], width: t._arr.width[ grids.length - 1], height: t._arr.height[ grids.length - 1], zIndex: t._arr.zIndex[ grids.length - 1] },200, function(){ $(this).appendTo(t._wapper); }); } }); //向后翻页 $('.next').bind('click',function() { if ( !t._initData && t._arr.left.length != 0) { t._initData = true; //重新获取选择器 var grids = t._wapper.find('li'); for (var i = 0; i < grids.length - 1; i ++) { grids.eq(i).animate({ left: t._arr.left[i + 1], top: t._arr.top[i + 1], width: t._arr.width[i + 1], height: t._arr.height[i + 1], zIndex: t._arr.zIndex[i + 1] },200,function() { t._initData = false; }); }; grids.eq(grids.length - 1).animate({ left: t._arr.left[0], top: t._arr.top[0], width: t._arr.width[0], height: t._arr.height[0], zIndex: t._arr.zIndex[0] },200, function(){ $(this).prependTo(t._wapper); grids.find('i').addClass('cover'); grids.eq(t._middle - 1).find('i').removeClass('cover'); }); } }); }, //鼠标进入图片效果 _mouseEnter: function(grids) { grids.each(function(i){ $(this).mouseenter(function() { $(this).find('.tab_name').animate({ bottom:0,opacity: 'show' },200); }); $(this).mouseleave(function() { $(this).find('.tab_name').animate({ bottom:-50,opacity: 'hide' },200); }); }); }, }; return carousel; });
以上就是本文的全部内容，希望对大家的学习有所帮助。