在我的容器中有部分/框，但是当没有其他框可见时，这些框中的最后一个框应该跟随滚动。
因此，当用户向下滚动时，他会看到正常的侧边栏，但是当用户已经足够下降时，侧边栏会结束，但最后一个框开始跟随屏幕顶部。我在不同类型的网站上看到了很多。
我的代码目前：
$(window).scroll(function(){
$.each($('.follow-scroll'),function(){
var eloffset = $(this).offset();
var windowpos = $(window).scrollTop();
if(windowpos<eloffset.top) {
var finaldestination = 0;
} else {
var finaldestination = windowpos;
}
$(this).stop().animate({'top':finaldestination},200);
});
});
由于这个问题得到了很多观点，并且在投票最多的答案中链接的教程似乎是脱机的，我花时间来清理这个脚本。
在这里看到它：JSFiddle
JavaScript的：
(function($) {
var element = $('.follow-scroll'),
originalY = element.offset().top;
// Space between element and top of screen (when scrolling)
var topMargin = 20;
// Should probably be set in CSS; but here just for emphasis
element.css('position', 'relative');
$(window).on('scroll', function(event) {
var scrollTop = $(window).scrollTop();
element.stop(false, false).animate({
top: scrollTop < originalY
? 0
: scrollTop - originalY + topMargin
}, 300);
});
})(jQuery);
我为此写了一个相对简单的答案。
我有一个表使用其中一个“粘性表头”插件粘在我页面上特定div的正下方，但是表格左边的菜单没有粘住（因为它不是表格的一部分。）
为了我的目的，我知道需要“粘性”的div总是从窗口顶部下方385像素处开始，所以我在上面创建了一个空div：
<div id="stopMenu" class="stopMenu"></div>
然后跑了这个：
$(window).scroll(function(){
if ( $(window).scrollTop() > 385 ) {
extraPadding = $(window).scrollTop() - 385;
$('#stopMenu').css( "padding-top", extraPadding );
} else {
$('#stopMenu').css( "padding-top", "0" );
}
});
当用户滚动时，它会将$(window).scrollTop()的值添加到整数385，然后将该值添加到stopMenu div，它高于我想要保持专注的事物。
如果用户一直向上滚动，我只需将额外的填充设置为0。
这并不要求用户特别在CSS中做任何事情，但是这会产生很小的延迟效果，所以我也把class="stopMenu"放进去了：
.stopMenu {
.transition: all 0.1s;
}
在https://web.archive.org/web/20121012171851/http://jqueryfordesigners.com/fixed-floating-elements/有一个很棒的jQuery教程。
它复制Apple.com购物车类型的侧边栏滚动。可能为您提供良好服务的Google查询是“固定浮动侧边栏”。
根据我的拙见，解决方案可归结为此：
var el=$('#follow-scroll');
var elpos=el.offset().top;
$(window).scroll(function () {
var y=$(this).scrollTop();
if(y<elpos){el.stop().animate({'top':0},500);}
else{el.stop().animate({'top':y-elpos},500);}
});
我已经改变了el的任务，因为再次以我的拙见，按阶段找到一个单一元素并不是一个很好的习惯。如果你只想要一个元素通过id找到它。如果要迭代元素集合，则按类查找它们。
我使用this保持我的代码很小，但希望，可读！
请注意 - 我的答案在这里指的是当时接受的答案（目前仍然是公认的答案，但后来经过编辑，因此我的答案不再“归结”你在@Martti Lane的答案中看到的答案我的回答“归结”了他原来的，接受的，回答;你可以看一下@ Martti答案的编辑历史，如果你对我“归结”的东西感兴趣的话。）
这对我来说就像一个魅力。
JavaScript的：
$(function() { //doc ready
if (!($.browser == "msie" && $.browser.version < 7)) {
var target = "#floating", top = $(target).offset().top - parseFloat($(target).css("margin-top").replace(/auto/, 0));
$(window).scroll(function(event) {
if (top <= $(this).scrollTop()) {
$(target).addClass("fixed");
} else {
$(target).removeClass("fixed");
}
});
}
});
CSS：
#floating.fixed{
position:fixed;
top:0;
}
这是我的最终代码....（基于以前的修复，感谢大家为headstart，节省了大量的时间进行实验）。让我烦恼的是向上滚动，以及向下滚动...... :)
它总是让我想知道jquery如何优雅！
$(document).ready(function(){
//run once
var el=$('#scrolldiv');
var originalelpos=el.offset().top; // take it where it originally is on the page
//run on scroll
$(window).scroll(function(){
var el = $('#scrolldiv'); // important! (local)
var elpos = el.offset().top; // take current situation
var windowpos = $(window).scrollTop();
var finaldestination = windowpos+originalelpos;
el.stop().animate({'top':finaldestination},500);
});
});
这是我的解决方案（希望它也足够插件）：
// SlideAlongScroll
var SlideAlongScroll = function(el) {
var _this = this;
this.el = el;
// elements original position
this.elpos_original = el.parent().offset().top;
// scroller timeout
this.scroller_timeout;
// scroller calculate function
this.scroll = function() {
// 20px gap for beauty
var windowpos = $(window).scrollTop() + 20;
// targeted destination
var finaldestination = windowpos - this.elpos_original;
// define stopper object and correction amount
var stopper = ($('.footer').offset().top); // $(window).height() if you dont need it
var stophere = stopper - el.outerHeight() - this.elpos_original - 20;
// decide what to do
var realdestination = 0;
if(windowpos > this.elpos_original) {
if(finaldestination >= stophere) {
realdestination = stophere;
} else {
realdestination = finaldestination;
}
}
el.css({'top': realdestination });
};
// scroll listener
$(window).on('scroll', function() {
// debounce it
clearTimeout(_this.scroller_timeout);
// set scroll calculation timeout
_this.scroller_timeout = setTimeout(function() { _this.scroll(); }, 300);
});
// initial position (in case page is pre-scrolled by browser after load)
this.scroll();
};
// init action, little timeout for smoothness
$(document).ready(function() {
$('.slide-along-scroll').each(function(i, el) {
setTimeout(function(el) { new SlideAlongScroll(el); }, 300, $(el));
});
});/* part you need */
.slide-along-scroll {
padding: 20px;
background-color: #CCCCCC;
transition: top 300ms ease-out;
position: relative;
}
/* just demo */
div {
box-sizing: border-box;
}
.side-column {
float: left;
width: 20%;
}
.main-column {
padding: 20px;
float: right;
width: 75%;
min-height: 1200px;
background-color: #EEEEEE;
}
.body {
padding: 20px 0;
}
.body:after {
content: ' ';
clear: both;
display: table;
}
.header {
padding: 20px;
text-align: center;
border-bottom: 2px solid #CCCCCC;
}
.footer {
padding: 20px;
border-top: 2px solid #CCCCCC;
min-height: 300px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<div class="header">
<h1>Your super-duper website</h1>
</div>
<div class="body">
<div class="side-column">
<!-- part you need -->
<div class="slide-along-scroll">
Side menu content
<ul>
<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
<li>Aliquam tincidunt mauris eu risus.</li>
<li>Vestibulum auctor dapibus neque.</li>
</ul>
</div>
</div>
<div class="main-column">
Main content area (1200px)
</div>
</div>
<div class="footer">
Footer (slide along is limited by it)
</div>
</div>该代码不能很好地解决它一点点
var el = $('.caja-pago');
var elpos_original = el.offset().top;
$(window).scroll(function(){
var elpos = el.offset().top;
var windowpos = $(window).scrollTop();
var finaldestination = windowpos;
if(windowpos<elpos_original) {
finaldestination = elpos_original;
el.stop().animate({'top':400},500);
} else {
el.stop().animate({'top':windowpos+10},500);
}
});
我需要div才能在到达某个对象时停止，所以我这样做：
var el = $('#followdeal');
var elpos_original = el.offset().top;
$(window).scroll(function(){
var elpos = el.offset().top;
var windowpos = $(window).scrollTop();
var finaldestination = windowpos;
var stophere = ( $('#filtering').offset().top ) - 170;
if(windowpos<elpos_original || windowpos>=stophere) {
finaldestination = elpos_original;
el.stop().animate({'top':10});
} else {
el.stop().animate({'top':finaldestination-elpos_original+10},500);
}
});
这个在facebook上是一样的：
<script>
var valX = $(window).scrollTop();
function syncScroll(target){
var valY = $(window).scrollTop();
var difYX = valY - valX;
var targetX = $(target).scrollTop();
if(valY > valX){
$(target).scrollTop(difYX);
}
if(difYX <= 0){
$(target).scrollTop(-20);
}
}
$(window).scroll(function(){
syncScroll('#demo');
})
</script>body{
margin:0;
padding:0;
height:100%;
}
#demo{
position:fixed;
height:100vh;
overflow:hidden;
width:40%;
}
#content{
position:relative;
float:right;
width:60%;
color:red;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<div id="demo">
<ul>
<li>
<p>"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."</p>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<ul>
</div>
<div id="content">
<ul>
<li>
<p>"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."</p>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<li>
<p>"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."</p>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<li>
<p>"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."</p>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<li>
<p>"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."</p>
</li>
<li>
<p>
"Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?"
</p>
</li>
<li>
<p>
"But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
</p>
</li>
<ul>
</div>
</body