我需要前往与用户滚动,但只在两点之间。因此,从其与用户的起始位置滚动到某个位置(在联系我们容器上方),然后向上返回用户。
这是当前使用的代码,这允许标题按需要滚动到某个点,但是当用户向上滚动时不会向上滚动。
HTML:
<div id="header" class="row">
<div class="col-sm-5">
<h1 id="scrollwith">Our Services.</h1>
</div>
<div class="col-sm-6 col-sm-offset-1">
<img src="images/backdroppattern.png" style="width: 100%; height: 3000px;">
</div>
</div>
</div>
<div id="contact-container">
<div class="row">
<div class="col-sm-12">
<a class="contact-link" href="#"><h2>Contact us ➔</h2></a>
</div>
</div>
</div>
JS:
$(document).ready(function(){
var windw = this;
$.fn.followTo = function ( pos ) {
var $this = this,
$window = $(windw);
$window.scroll(function(e){
if ($window.scrollTop() > pos) {
$this.css({
position: 'absolute',
top: pos
});
} else {
$this.css({
position: 'fixed'
});
}
});
};
$('#scrollwith').followTo(2700);
});
答案 0 :(得分:0)
此答案的所有内容均来自帖子here中的@MicronXD。
jQuery.fn.extend({
followTo: function(elem, marginTop) {
var $this = $(this);
var $initialOffset = $this.offset().top;
setPosition = function() {
if ($(window).scrollTop() > $initialOffset) {
if (elem.offset().top > ($(window).scrollTop() + $this.outerHeight() + marginTop)) {
$this.css({
position: 'fixed',
top: marginTop
});
}
if (elem.offset().top <= ($(window).scrollTop() + $this.outerHeight() + marginTop)) {
$this.css({
position: 'absolute',
top: elem.offset().top - $this.outerHeight()
});
}
}
if ($(window).scrollTop() <= $initialOffset) {
$this.css({
position: 'relative',
top: 0
});
}
}
$(window).resize(function() {
setPosition();
});
$(window).scroll(function() {
setPosition();
});
}
});
$('#scrollwith').followTo($('#contact-container'), 0);
&#13;
#contact-container {
background: red;
height: 900px;
}
#scrollwith {
background: blue;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="header" class="row">
<div class="col-sm-5">
<h1 id="scrollwith">Our Services.</h1>
</div>
<div class="col-sm-6 col-sm-offset-1">
<img src="images/backdroppattern.png" style="width: 100%; height: 3000px;">
</div>
</div>
<div id="contact-container">
<div class="row">
<div class="col-sm-12">
<a class="contact-link" href="#">
<h2>Contact us ➔</h2>
</a>
</div>
</div>
</div>
&#13;