jQuery 导航自动跟随滚动的实现代码
时间：2021-07-17 08:11:19|栏目：jquery|点击： 次
具体代码如下所示：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:set var="front" value="${frontPath}${pageContext.request.contextPath}/f"/>
<c:set var="ajaxUrl" value="${frontPath}${pageContext.request.contextPath}"/>
<c:set var="ctxStatic" value="${pageContext.request.contextPath}/static"/>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<meta name="format-detection" content="telephone=no,email=no,adress=no"/>
<meta name="viewport"
content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no"/>
<meta name="apple-mobile-web-app-capable" content="yes"/>
<meta name="apple-mobile-web-app-status-bar-style" content="black"/>
<title>simpleNavFollowing</title>
<style>
* {
margin: 0;
padding: 0;
}
html, body {
position: relative;
height: 100%;
}
#nav {
position: fixed;
top: 50%;
left: 20px;
margin-top: -140px;
display: inline-block;
vertical-align: middle;
}
#nav a{
display: block;
position: relative;
width: 98px;
height: 28px;
line-height: 28px;
text-align: center;
background-color: #eee;
color: #333;
border-left: 2px solid transparent;
}
#nav a:hover{
width: 98px;
border-left: 2px solid #4b59ff;
}
#nav a p{
position: relative;
z-index: 3;
}
#nav a.active{
background-color: #4b59ff;
color: #fff;
}
#main {
max-width: 1200px;
margin: 0 auto;
}
#main div {
height: 300px;
background-color: #efefef;
border-top: 1px solid #ccc;
}
#main div:nth-child(2n) {
background-color: #fafafa;
}
</style>
<script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
<script>
$(function () {
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>=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}, 400);
});
});
</script>
</head>
<body>
<div id="nav">
<a href="#page1" rel="external nofollow" class="active">page1</a>
<a href="#page2" rel="external nofollow" >page2</a>
<a href="#page3" rel="external nofollow" >page3</a>
<a href="#page4" rel="external nofollow" >page4</a>
<a href="#page5" rel="external nofollow" >page5</a>
<a href="#page6" rel="external nofollow" >page6</a>
<a href="#page7" rel="external nofollow" >page7</a>
<a href="#page8" rel="external nofollow" >page8</a>
<a href="#page9" rel="external nofollow" >page9</a>
<a href="#page10" rel="external nofollow" >page10</a>
</div>
<div id="main">
<div class="mainPage" id="page1">page1</div>
<div class="mainPage" id="page2" style="height: 400px;">page2</div>
<div class="mainPage" id="page3">page3</div>
<div class="mainPage" id="page4">page4</div>
<div class="mainPage" id="page5" style="height: 300px;">page5</div>
<div class="mainPage" id="page6">page6</div>
<div class="mainPage" id="page7">page7</div>
<div class="mainPage" id="page8">page8</div>
<div class="mainPage" id="page9" style="height: 900px;">page9</div>
<div class="mainPage" id="page10">page10</div>
<div class="mainPage" id="page11" style="height: 900px;">page11</div>
</div>
</body>
</html>
总结
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栏 目：jquery
本文标题：jQuery 导航自动跟随滚动的实现代码
本文地址：http://www.codeinn.net/misctech/158528.html
