jquery实现焦点轮播效果
(编辑：jimmy 日期: 2024/11/18 浏览：3 次 )
HTML代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="./css/lunbo.css" rel="external nofollow" > </head> <body> <div id="banner"> <ul class="img-ul"></ul> <ol class="index-ol"></ol> <div class="slide"> <span class="prev"><</span> <span class="next">></span> </div> </div> <script src="/UploadFiles/2021-04-02/jquery-1.11.3.js">css代码
div { width: 670px; height: 240px; position: relative; overflow: hidden; } div > ul, div ol { list-style: none; position: absolute; margin: 0; padding: 0; } div > ul.img-ul, div ol.img-ul { width: 3350px; height: 240px; z-index: 100; } div > ul.img-ul > li, div ol.img-ul > li { float: left; width: 670px; height: 240px; } div > ul.index-ol, div ol.index-ol { width: 205px; bottom: 10px; left: 217px; z-index: 1000; } div > ul.index-ol > li, div ol.index-ol > li { float: left; cursor: pointer; margin-left: 20px; background: #000; color: #fff; border-radius: 50%; height: 20px; width: 20px; text-align: center; line-height: 20px; } div > ul.index-ol > li.active, div ol.index-ol > li.active { background: red; } div > div.slide { z-index: 500; position: absolute; width: 670px; height: 240px; left: 0; top: 0; } div > div.slide > span { cursor: pointer; position: absolute; top: 100px; width: 30px; height: 60px; line-height: 60px; text-align: center; font-size: 20px; color: #fff; background: rgba(0, 0, 0, 0.2); } div > div.slide > span:nth-child(1) { left: 0; } div > div.slide > span:nth-child(2) { right: 0; }JavaScript代码
var arr=[ {"img":"./images/banner_01.jpg"}, {"img":"./images/banner_02.jpg"}, {"img":"./images/banner_03.jpg"}, {"img":"./images/banner_04.jpg"}, {"img":"./images/banner_05.jpg"}, ]; var lunbo={ can:0, //判断 ul_li:"",//图片列表 ol_li:"",//数字列表 width:"",//一个li的宽度 interval:"",//定时器 init:function(){ console.log(this); this.view(); this.view_index(); $("ol.index-ol").children("li:eq(0)").addClass("active"); this.width=$("ul.img-ul>li").width(); //670 this.slide(); //这是左右箭头 this.animation_index();//这是下标 this.play(); //这是自动轮播 this.mouse(); //这是鼠标滑入/滑出 }, mouse:function(){ var _this=this; $("#banner").on({ mouseenter:function(){ _this.stop() }, mouseleave:function(){ _this.play(); } }) }, play:function(){ this.interval=setInterval(function(){ var active_index= parseInt($("ol.index-ol>li.active").attr("data-index"));//得到当前激活向下标 $("ol.index-ol>li").removeClass("active"); $(this).addClass("active"); this.animation(1); (active_index==4)&&(active_index=-1); $("ol.index-ol>li:eq("+(active_index+1)+")").addClass("active") }.bind(this),3000); }, stop:function(){ clearInterval(this.interval) this.interval=null; }, animation_index:function(){//更新下标 var _this=this; $("ol.index-ol>li").mouseenter(function(){//点击下标 var active_index= $("ol.index-ol>li.active").attr("data-index");//得到当前激活向下标 var index=$(this).attr("data-index");//得到当前下标; if(active_index==index){return;}; $("ol.index-ol>li").removeClass("active"); $(this).addClass("active"); var end=index-active_index; _this.animation(-end) }) }, slide:function(){//点击左右箭头 var _this=this; $("div.slide>span").click(function(){ if(_this.can){return;}; var active_index= parseInt($("ol.index-ol>li.active").attr("data-index"));//得到当前激活向下标 $("ol.index-ol>li").removeClass("active"); if(this.className=="prev"){ _this.animation(1); (active_index==1)&&(active_index=5); $("ol.index-ol>li:eq("+(active_index-1)+")").addClass("active") }else{ _this.animation(-1); (active_index==4)&&(active_index=-1); $("ol.index-ol>li:eq("+(active_index+1)+")").addClass("active") } }) }, view:function(){//更新图片 for(var i=0;i<arr.length;i++){ this.ul_li+="<li data-index="+i+"><img src="/UploadFiles/2021-04-02/+arr[i].img+">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！
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