24-[jQuery]-案例
1、仿淘宝导航栏案例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>仿淘宝导航栏案例</title> <style type="text/css"> *{padding: 0;margin: 0;} div{width: 100%;} div img{width: 100%;} .nav{display: none;} </style> </head> <body> <div class="top"> <img src="images/top.jpg" alt="" /> </div> <div class="nav"> <img src="images/nav.jpg"/> </div> <div class= 'taobao'> <img src="images/taobao1.png"/> </div> </body> <script src="jquery-3.2.1.js"></script> <script type="text/javascript"> $(function () { var h = $('.top').height(); $(document).scroll(function () { var scrollTop = $(document).scrollTop(); if(h<scrollTop){ $('.nav').css({display:'block',position:'fixed',top:0}); }else{ $('.nav').css({display:'none',position:'static',top:0}); } }) }) </script> </html>
2、选项卡嵌套
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>选项卡嵌套</title> <style type="text/css"> *{padding: 0;margin: 0;} ul{ list-style: none; } /*清除浮动产生的问题*/ #box:after{ content: ""; display: block; clear: both; } #box{width: 800px;border: 1px solid black;margin: 20px auto;background: blue;} #leftBox{width: 200px;float: left;} #leftBox li{width: 200px;height: 89px;background: red;margin-bottom: 2px;color: white;font: 50px/89px "黑体"; text-align: center;} #rightBox div{display: none;float: left; width: 600px;} #rightBox p{width:100%;height: 325px;font: 100px/325px "黑体";text-align: center;background: greenyellow } /*父元素设置display：table使它成为一个块级表格元素 * 子元素设置display：table-cell使子元素成为表格单元格，就好比是在表格中一样*/ #rightBox ul{width: 600px;display: table;} #rightBox li{display: table-cell;background: purple;height: 40px;border-right: 2px solid blue; font: 30px/40px "黑体";text-align: center;color: white;} #leftBox .active{background: yellow;color: black;} #rightBox .active{background: white;color: black;} </style> </head> <body> <div id="box"> <ul id="leftBox"> <li>a</li> <li>b</li> <li>c</li> <li>d</li> </ul> <div id="rightBox"> <div style="display: block"> <p>a1</p> <ul> <li class="active">a1</li> <li>a2</li> <li>a3</li> <li>a4</li> </ul> </div> <div> <p>b1</p> <ul> <li class="active">b1</li> <li>b2</li> <li>b3</li> <li>b4</li> </ul> </div> <div> <p>c1</p> <ul> <li class="active">c1</li> <li>c2</li> <li>c3</li> <li>c4</li> <li>c5</li> <li>c6</li> </ul> </div> <div> <p>d1</p> <ul> <li class="active">d1</li> <li>d2</li> <li>d3</li> <li>d4</li> </ul> </div> </div> </div> </body> <script src="jquery-3.2.1.js"></script> <script type="text/javascript"> //鼠标移入得时候 $('#leftBox li').mouseover(function () { $(this).addClass('active').siblings('li').removeClass('active'); //修改右边得div $('#rightBox div').eq($(this).index()).show().siblings('div').hide(); }); $('#rightBox li').click(function () { $(this).addClass('active').siblings('li').removeClass('active'); $(this).parent().prev().html($(this).html()); }) </script> </html>
3、小米官网案例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>小米官网手风琴</title> <style type="text/css"> *{ padding: 0; margin: 0; } ul{list-style: none;} .wrap{width: 980px;height: 612px;margin: 20px auto;background: #f4f3f4;border: 1px solid gray;} ul li{float: left;margin-left: 10px;position: relative;overflow: hidden;width: 233px;height: 300px;} ul li p{ width: 233px; height: 100px; background: rgba(245,102,51,.7); position: absolute; bottom: -100px; text-align: center; color: white; line-height: 100px; } </style> </head> <body> <div class="wrap"> <ul> <li><a href="#"><img src="images/xiaomi_01.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_02.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_03.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_04.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_05.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_07.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_08.png"/></a><p>百度一下，你就知道</p></li> <li><a href="#"><img src="images/xiaomi_09.png"/></a><p>百度一下，你就知道</p></li> </ul> </div> </body> <script src="jquery-3.2.1.js"></script> <script type="text/javascript"> //mouserenter 进入 mouseleave 离开 $('.wrap li').hover(function () { $(this).children('p').stop(true).animate({bottom:'0px'},100); // 先停止 在启动动画 },function () { $(this).children('p').stop(true).animate({bottom:'-100px'},100) }) </script> </html>
4、焦点轮播图
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>焦点轮播图</title> <style type="text/css"> *{padding: 0;margin: 0;} ul,ol{list-style: none;} #wrap{width: 650px;height: 250px;margin: 100px auto 0;background: red;overflow: hidden;position: relative;} /*#wrap img{display: block;}*/ #wrap ul{height: 250px;position: relative;z-index: 1;} #wrap ol{height: 30px;position: absolute;z-index: 2;bottom: 0;right: 0;} #wrap>ul>li{ position: absolute; top:0; left: 0; } #wrap>ol>li{ float: left; width: 20px; height: 20px; text-align: center; line-height: 20px; border: 1px solid white; background: gray; margin-right: 5px; } #wrap>ol>li:hover{ /*设置鼠标形状*/ cursor: pointer; } #wrap li.active{ padding: 2px; color: orange; margin-top: -4px; border: 1px solid orange; } </style> </head> <body> <div id="wrap"> <ul> <!--设置绝对定位之后 脱离标准流 最后一个盒子层级提升了--> <li style="z-index: 1;"><a href="#"><img src="./images/01.jpg"/></a></li> <li><a href="#"><img src="./images/02.jpg"/></a></li> <li><a href="#"><img src="./images/03.jpg"/></a></li> <li><a href="#"><img src="./images/04.jpg"/></a></li> <li><a href="#"><img src="./images/05.jpg"/></a></li> </ul> <ol> <li class="active">1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> </ol> </div> </body> <script src="jquery-3.2.1.js"></script> <script type="text/javascript"> $(function () { //控制层级关系得索引 var index = 0; $('#wrap>ol>li').mouseenter(function () { index++; //修改下标class $(this).addClass('active').siblings('li').removeClass('active'); //修改图片 $('#wrap>ul>li').eq($(this).index()).css({'left':'650px','z-index':index}).animate({'left':'0'},1000) }) }) </script> </html>
5、动态实现轮播图
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> *{padding: 0;margin: 0;} ul{list-style: none;} #box{ /*图片的宽高 240px 180px*/ width: 240px; height: 180px; position: relative; margin: 50px auto; overflow: hidden; } ul{ width: 960px; position: absolute; } ul li{ float: left; } p{ position: absolute; left: 80px; bottom: 30px; } p span{ color: red; display: inline-block; width: 20px; height: 20px; line-height: 20px; text-align: center; cursor: pointer; } p span.active{ color: white; background: greenyellow; } </style> </head> <body> <div id="box"> <ul> <!--显示轮播的图片--> <!--<li><img src="01.jpg" alt="" /></li> <li><img src="01.jpg" alt="" /></li> <li><img src="01.jpg" alt="" /></li> <li><img src="01.jpg" alt="" /></li>--> </ul> <p> <!--显示索引--> </p> </div> <button id="play">轮播吧！</button> <button id="stop">暂停！</button> </body> <script src="jquery-3.2.1.js"></script> <script type="text/javascript"> $(function(){ //1.获取本地的图片数据 以后再后面的课程中这些数据会从后端服务器获取 var imgArr = ['./01.jpg','./02.jpg','./03.jpg','./04.jpg']; //2.动态的生成图片 for(var i = 0; i < imgArr.length;i++){ $('ul').append("<li><img src="+imgArr[i]+"></li>") } //3.生成索引 var str = ''; $('li').each(function(i,ele){ str += "<span>"+(i+1)+"</span>" }); console.log(str); $('p').html(str); //4.默认设置索引的第一个active $('span:first').addClass('active'); var index = 0; //5.点击索引 $('span').click(function(){ $(this).addClass('active').siblings('span').removeClass('active'); //获取我当前点击的索引 index = $(this).index(); // $('ul').css("left",-240*index); $('ul').animate({ left:-240*index },100) }); var timer = null; $('#play').click(function(){ //0.开启定时器 1.索引跟着走 2.图片跟着走 timer = setInterval(next,1000) function next(){ if(index == $('li').length-1){ //图片到头了了 到第四张 index = 0; //修改span的第一个active $('p span').eq(index).addClass('active').siblings('span').removeClass('active'); //修改ul的样式 $('ul').css('left',0); }else{ index++; console.log(index); //修改后三个span标签的active $('p span').eq(index).addClass('active').siblings('span').removeClass('active'); $('ul').css('left',-240*index); } } }); //6.关闭定时器 $("#stop").click(function(){ clearInterval(timer); }) }) </script> </html>
