jQuery实现侧边导航栏及滑动电梯效果(仿淘宝)
效果图
实现代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> * { margin: 0px; padding: 0px } .box { width: 1200px; margin: 0 auto; position: relative; } .navfix { display: none; width: 1200px; height: 30px; background-color: pink; position: sticky; top: 0px } .goodetem, .contain1 { width: 1200px; height: 500px; background-color: red; } .contain1 { height: 300px; background-color: rgb(226, 111, 130); } .youlike { width: 1200px; height: 1800px; background-color: skyblue; } a { text-decoration: none; color: black } .bar a { display: block; width: 80px; height: 80px; background-color: grey; text-align: center; line-height: 40px; } .bar { width: 100px; height: 100px; position: absolute; left: 1210px; top: 200px; } a:hover { color: orange } </style> <script src="jquery.min.js"></script> </head> <body> <div class="box"> <div class="top1" style="background-color:blue;width:1200px;height:60px;"></div> <div class="navfix"></div> <div class="contain1"></div> <div class="goodetem"></div> <div class="youlike"></div> <div class="bar"> <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="pinzhi">品质<br>好货</a><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="like">猜你<br>喜欢</a><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="top" style="display:none">顶部</a><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >反馈</a><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >暴恐<br>举报</a> </div> </div> <script> $(function() { // console.log($('.bar').offset().top); // console.log($('.bar').offset().left); var a = $('.bar').offset().left $(window).scroll(function() { console.log($('document, html').scrollTop()); if ($('document, html').scrollTop() >= $('.bar').offset().top) { $('.bar').css('position', 'fixed') $('.bar').css('top', 0) $('.bar').css('left', a) } if ($('document, html').scrollTop() < 200) { $('.bar').css('position', 'absolute') $('.bar').css('top', 200) $('.bar').css('left', 1210) } if ($('document, html').scrollTop() >= 300) { $('.top').css('display', 'block') } else { $('.top').css('display', 'none') } if ( $('document, html').scrollTop() >= 65 ) { $('.navfix').css('display', 'block') } else { $('.navfix').css('display', 'none') } }) //添加bar的点击事件,返回到相应的位置上去 //优化,应该给每个小模块添加一个索引号,与大盒子相对应,一开始将所有的模块一起添加一个点击事件,再回到相对应大盒子的位置 $('.top').click(function() { $('document, html').stop().animate({ scrollTop: 0 }) }) $('.pinzhi').click(function() { $('document, html').stop().animate({ scrollTop: 358 }) }) $('.like').click(function() { $('document, html').stop().animate({ scrollTop: 888 }) }) }) </script> </body> </html>
品优购电梯导航效果:
1、当滚动到今日推荐模块,就让电梯导航显示出来
2、点击电梯导航页面可以滚动到相应的内容区域
没必要每个模块都加一个点击事件
1、核心:电梯导航模块和内容区模块是一一对应的
根据左侧小盒子的索引号来找相应的大盒子
console.log($(this).index()); //获取点击的索引号
console.log($('.folr div').eq($(this).index())); //获取与索引号相对应的内容
2、当点击电梯导航某个小模块,就可以拿到当前小模块的索引号
3、就可以把animate要移动的距离求出来:当前索引号内容区模块他的offset().top
4、当页面滚动到内容区域的某个模块,左侧电梯导航,相对应的小li模块,也会添加current类,兄弟移除current类
1、这个功能是在页面滚动的时候触发的,因此需要写在页面滚动事件里面
2、需要用到each,遍历内容区域大模块,each里面能拿到内容区域每一个模块元素和索引号
3、判断条件:被卷去的头部大于等于内容区域里面每个模块的offset().top。
4、利用这个索引号找到相应的电梯导航小li添加类
bug:
1、当点击小li,执行动画的时候,不需要执行页面滚动事件里面li的背景选择,不加类名--节流阀(互斥锁) var flag = true 通过多加一个判断条件来实现 当animate执行完之后,就打开页面滚动里面li的背景选择(回调函数)
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> .box { width: 600px; margin: 10px auto; position: relative; } .hoomtool, .phone, .diannao, .jiayodianqi, .shenghuo { width: 600px; height: 800px; } .hoomtool { background-color: pink; } .phone { background-color: red; } .diannao { background-color: blue; } .jiayodianqi { background-color: grey; } .shenghuo { background-color: skyblue; } a { text-decoration: none; color: black; font-size: 25px; } .bar { width: 140px; position: fixed; top: 300px; left: 20px; display: none; margin: 0px; padding: 0px; } ul { padding: 0px; } li { list-style: none; height: 50px; text-align: center; line-height: 50px; } .nav { height: 400px; background-color: purple; } .tuijian { height: 50px; background-color: rgb(121, 97, 97) } .current { background-color: red; } </style> <script src="jquery.min.js"></script> </head> <body> <div class="box"> <div class="nav"></div> <div class="tuijian" class="dff">今日推荐</div> <!-- 单独包括再一个大盒子里面,便于索引--内容区域 --> <div class="folr"> <div class="hoomtool">家用电器</div> <div class="phone">手机通讯</div> <div class="diannao">电脑办公</div> <div class="jiayodianqi">家居家具</div> <div class="shenghuo">生活用品</div> </div> <div class="bar"> <ul> <li class="current"><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >家用电器</a></li> <li><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >手机通讯</a></li> <li><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >电脑办公</a></li> <li><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >家居家具</a></li> <li><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >生活用品</a></li> </ul> </div> </div> <script> $(function() { var flag = true var a = $('.tuijian').offset().top // console.log(a); $('.bar').fadeOut() $(window).scroll(function() { //1、导航栏的显示与隐藏 if ($('document, html').scrollTop() >= a) { $('.bar').fadeIn() } else { $('.bar').fadeOut() } //4、当页面滚动到内容区域的某个模块,左侧电梯导航,相对应的小li模块,也会添加current类,兄弟移除current类 if (flag == true) { $('.folr div').each(function(index, eld) { // console.log($(eld).offset().top); if ($('document, html').scrollTop() >= $(eld).offset().top) { $('ul li').eq(index).addClass('current') $('ul li').eq(index).siblings().removeClass('current') } }) } }) //2、电梯对应效果 $('ul li').click(function() { console.log($(this).index()); //获取点击的索引号 //每次点击li,就需要计算页面要去往的位置 //选出对应索引号内容区的盒子 console.log($('.folr div').eq($(this).index())); //获取与索引号相对应的内容 flag = false // $('document,html').scrollTop($('.folr div').eq($(this).index()).offset().top)//要添加动画效果(动画滚动效果) $('document,html').animate({ scrollTop: $('.folr div').eq($(this).index()).offset().top //只要一滚动就会触发上面的滚动事件 }, function() { flag = true }) //3、点击之后让当前的li添加current类名,兄弟则移除类名 $(this).addClass('current') $(this).siblings().removeClass('current') }) }) </script> </body> </html>
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