我正在制作一个网站，并希望将这个网站的一些内容合并到我的菜单中。 http://webdesign.tutsplus.com/tutorials/javascript-tutorials/create-a-sticky-navigation-header-using-jquery-waypoints/ 我真的很喜欢我的菜单栏根据部分进行更改，但我对javascript全新，并且遇到了一些麻烦。现在，它似乎没有起作用。有什么建议？谢谢！继承了一些代码
<script language="javascript" type="text/javascript">
$(function() {
// Do our DOM lookups beforehand
var nav_container = $(".nav-container");
var nav = $("nav");
nav_container.waypoint({
handler: function(direction) {
nav_container.toggleClass('sticky', direction=='down');
}
var sections = $('section');
var navigation_links = $('nav a');
sections.waypoint({
handler: function(event, direction) {
// handler code
},
offset: '35%'
});
var active_section;
active_section = $(this);
if (direction === "up") active_section = active_section.prev();
var active_link = $('nav a[href="#' + active_section.attr("id") + '"]');
navigation_links.removeClass("selected");
active_link.addClass("selected");
});
$("li.nav-item").click(function() {
$("html, body").animate({
scrollTop: $($(this).children().attr("href")).offset().top + "px"}, {duration: 500, easing: "swing"
});
return false;
});
$(document).ready(function(){
$('img').click(function(){
// get the url of the picture we clicked
var url = $(this).attr('src');
// get the url of the large image
var bigUrl = $('.large-picture > img').attr('src');
// change the url of the big picture
$('.large-picture > img').attr('src', url);
$(this).attr('src', bigUrl);
});
});
});
</script>
菜单栏 这里是菜单栏，如下图所示，它对应于导航导致跳转到的html中的标记
<div class = 'nav-container'>
<nav>
<div id = 'nav-items-container'>
<ul class='nav-items'>
<li class='nav-item'><a href='#what'>what</a></li>
<li class='nav-item'><a href='#how'>how</a></li>
<li class='nav-item'><a href='#why'>why</a></li>
<li class='nav-item'><a href='#who'>who</a></li>
<li class='nav-item'><a href='#where'>where</a></li>
</ul>
</div>
</nav>
</div>
标记看起来像这样
<div class = 'mark' id = 'what'></div>
标签来设置导航将更改的所需部分
答案 0 :(得分：0)
看起来你正在另一个对航点的调用中调用航点。这是你想做的吗？
nav_container.waypoint({
//first call to waypoint
handler: function(direction) {
nav_container.toggleClass('sticky', direction=='down');
}
//close handler
var sections = $('section');
var navigation_links = $('nav a');
//second waypoint call
sections.waypoint({
handler: function(event, direction) {
// handler code
},
offset: '35%'
});
您能描述一下您希望菜单如何更改以及在哪个路点（哪个元素）？ 此外，如果您可以发布一些HTML，将会很有帮助。
答案 1 :(得分：0)
这对我来说很好。我写了一堆评论，希望很清楚。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Smashing HTML5!</title>
<style type="text/css">
li { display:inline; background-color: #004900; padding: 4px; font-weight: bold;}
li a { color:#fff; text-decoration: none;}
.mark { position: absolute; color: #fff; height: 500px; width: 100%;
font-size: 24px; padding: 10px; padding-top: 50px;}
#who{ top: 500px; background-color: #005600;}
#what{ top: 1000px; background-color: #000078;}
#how{ top: 1500px; background-color: #f30000;}
#why{ top: 2000px; background-color: #00ff00;}
#where{ top: 2500px; background-color: #000022;}
.nav-container { z-index: 100;}
</style>
<!--[if IE]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<!--[if lte IE 7]>
<script src="js/IE8.js" type="text/javascript"></script><![endif]-->
<!--[if lt IE 7]>
<link rel="stylesheet" type="text/css" media="all" href="css/ie6.css"/><![endif]-->
<!-- DON'T FORGET TO CHANGE THESE PATHS -->
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="/jquery.1.10.2.min"></script>
<script src="/waypoints/waypoints.min.js"></script>
<script src="/waypoints/shortcuts/sticky-elements/waypoints-sticky.min.js"></script>
<script>
$(document).ready( function(){
var wid;
/*the shortcut below is all you need to make the menu
stick to the top. --- make sure to load
waypoints-sticky.min.js as I have in the
<head> section*/
$('.nav-container').waypoint('sticky');
//helper function that does the high-lighting --- I've written it out
//step by step
function highlight(hl_id){
$("li > a").css({ "background-color" : "#004900", "color": "#fff"});
$("li").css({"background-color" : "#004900", "color": "#fff"});
$("#" + hl_id + "-nav").css({"background-color" : "#f0f0f0", "color": "#000"});
$("#" + hl_id + "-nav > a").css({
"background-color" : "#f0f0f0", "color": "#000"});
}
/* now we turn the marks into waypoints*/
$('.mark').waypoint(function(direction) {
/* now we get the id of the waypoint we're jumping to*/
wid = $(this).attr("id");
//if we're scrolling up we get "previous" waypoint
if ( direction == 'up' ){
var highlight_p = $('#' + wid).waypoint('prev');
wid_p = highlight_p.attr("id");
highlight(wid_p);
}
//if we're scrolling up we get last waypoint
else if ( direction == 'down' ) {
highlight(wid);
}
});
});//end doc ready
</script>
</head>
<body id="index" class="home">
<div class='nav-container' style="position:fixed;">
<nav>
<div id='nav-items-container'>
<ul class='nav-items'>
<li class='nav-item' id="who-nav"><a href='#who'>who</a></li>
<li class='nav-item' id="what-nav"><a href='#what'>what</a></li>
<li class='nav-item' id="how-nav"><a href='#how'>how</a></li>
<li class='nav-item' id="why-nav"><a href='#why'>why</a></li>
<li class='nav-item' id="where-nav"><a href='#where'>where</a></li>
</ul>
</div>
</nav>
</div>
<div class='mark' id='who'>who</div>
<div class='mark' id='what'>what</div>
<div class='mark' id='how'>how</div>
<div class='mark' id='why'>why</div>
<div class='mark' id='where'>where</div>
</body>
</html>