标签:array rip sibling rem 粘贴 new rev jquer cat
想做一个导航跟随,但是代码都要下载,自己简单些了一个,css都放html里面了,所以也不用下载直接新建html,然后粘贴,点开就是导航跟随效果
效果如图
<!DOCTYPE html> <html> <head> <title>导航跟随</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <script src="http://www.w3school.com.cn/jquery/jquery-1.11.1.min.js"></script> </head> <style> #nav { display: -webkit-box; display: -ms-flexbox; display: -webkit-flex; display: flex; line-height: 30px; font-size: 14px; width: 100%; position: fixed; top: 0px; left: 0px; z-index: 100; border-bottom: 1px solid #e5e5e5; border-top: 1px solid #e5e5e5; min-height: 44px; background: #000; } #nav a { display: block; position: relative; width: 25%; line-height: 44px; text-align: center; color: #fff; } #nav a.active { color: #fff; background: red; } #main { padding-top: 44px; } </style> <script> $(window).load(function () { $(‘html, body‘).animate({ scrollTop: 0 }, 200); var nav = $("#nav"); var mainPage = $(".mainPage"); var mainTopArr = new Array(); for (var i = 0; i < mainPage.length; i++) { var top = mainPage.eq(i).offset().top; mainTopArr.push(top); } $(window).scroll(function () { var scrollTop = $(this).scrollTop(); var k; for (var i = 0; i < mainTopArr.length; i++) { if (scrollTop + 144 >= mainTopArr[i]) { k = i; } } nav.find("a").eq(k).addClass("active").siblings().removeClass("active"); }); nav.find("a[href^=‘#‘]").click(function (e) { e.preventDefault(); $(‘html, body‘).animate({ scrollTop: $(this.hash).offset().top - 144 }, 200); }); }); </script> <body> <div id="nav"> <a href="#imgdetails" class="active">商品</a> <a href="#specifications">规格</a> <a href="#reviews">评价</a> <a href="#description">详情</a> </div> <div id="main"> <div class="mainPage" id="imgdetails"style="height:500px">我是第一块的内容</div> <div class="mainPage" id="specifications" style="height:500px">我是第二块的内容</div> <div class="mainPage" id="reviews" style="height:500px">我是所有评论啦,来看评论</div> <div class="mainPage" id="description" style="height:500px">我是介绍,来看介绍</div> </body> </html>
本来是想用document.ready,但是应用到实际中有页面包含了很多绝对定位的元素,定位并不准确。
标签:array rip sibling rem 粘贴 new rev jquer cat
原文地址:https://www.cnblogs.com/yes-you-can/p/9348233.html