我想用css创建一个样式简单但颇具吸引力的时钟，它将漂浮在页面的右上角，从顶部向下大约100像素，时钟右侧和垂直滚动条之间的间距为5像素。
我需要两个时钟：一个时钟显示UTC时间并在左侧带有UTC标签，第二个时钟同样显示本地时间。
这两个时钟也应该浮动，以便当您向下滚动页面时，在向下移动页面后它们将成为最高对齐。
我将如何创建这种性质的安排？您能否提供一个示例说明如何创建此代码？ jQuery更简单。
这两个时钟可能看起来像这样：
最佳答案
1）这是一个脚本，它将在IE中修复容器
http://www.gregjopa.com/2011/07/conditional-fixed-positioning-with-jquery/
2）时钟插件
http://www.ajaxupdates.com/jclock-jquery-clock-plugin/
https://github.com/dsparling/jclock
虽然将jQuery更改为最新版本
示例-请将相应的源下载到您自己的服务器上：
DEMO
<!doctype html>
<html>
<head>
<title>Conditional Fixed Positioning with jQuery</title>
<style type="text/css">
#wrapper {
width: 960px;
margin: 0 auto;
}
#header {
border: 1px solid;
padding: 10px;
margin-bottom: 10px;
}
#content {
float: right;
width: 620px;
padding: 0 10px 10px;
border: 1px solid;
margin-bottom: 10px;
}
#right-column {
width: 300px;
float: right;
position: relative;
}
#sidenav {
border: 1px solid;
margin-bottom: 10px;
background-color: #F0F0F0;
padding: 5px;
}
.sidenav-fixed {
position:fixed;
top:0;
margin:0;
width: 288px;
}
#links {
border: 1px solid;
padding: 5px;
}
h3 {
padding-left: 5px;
}
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="https://raw.github.com/dsparling/jclock/master/jquery.jclock.js"></script>
<script type="text/javascript" src="https://raw.github.com/cowboy/jquery-throttle-debounce/master/jquery.ba-throttle-debounce.min.js"></script>
<script type="text/javascript" src="https://raw.github.com/Modernizr/Modernizr/master/modernizr.js"></script>
<script type="text/javascript" src="https://raw.github.com/gist/855078/bf649cd4b0b2df52d3840835c6f7699b79935bab/modernizr-tests.js"></script>
<script type="text/javascript">
$(document).ready(function() {
if (Modernizr.positionfixed && !Modernizr.appleios && !Modernizr.android) {
// cache selector queries
var sidenav = $('#sidenav'),
sidenavWrap = $('#sidenav-wrap'),
view = $( window ),
sidenavHeight = sidenav.outerHeight(true),
sidenavWrapperOffset = sidenavWrap.offset();
function horizontalScrollCheck() {
// update sidenav left position when horizontal scrollbar exists and is scrolled
if (view.scrollLeft() > 0) {
sidenav.css('left', (-1 * view.scrollLeft() + 8));
}
else if (sidenav.css('left') != sidenavWrapperOffset.left) {
sidenav.css('left', sidenavWrapperOffset.left);
}
}
function stickyNavCheck() {
// apply fixed positioning when sidenav scrolls to the top of the browser and is smaller than viewport height
if ($(this).scrollTop() > sidenavWrapperOffset.top && view.height() > sidenavHeight){
if (!sidenav.hasClass('sidenav-fixed') ) {
sidenav.addClass('sidenav-fixed');
// fill visual space of static positioned sidenav
sidenavWrap.css('margin-bottom', sidenavHeight);
}
else {
horizontalScrollCheck();
}
} else {
if (sidenav.hasClass('sidenav-fixed') ) {
sidenav.removeClass('sidenav-fixed');
sidenavWrap.css('margin-bottom', 0);
}
}
}
// using Cowboy's jQuery throttle/debounce plugin to throttle the scroll event
view.bind("scroll resize", $.throttle( 100, stickyNavCheck ) );
// update offset and left position of sidenav on resize event
view.bind("resize", $.throttle( 100, function() {
sidenavWrapperOffset = $('#sidenav-wrap').offset();
if (sidenav.hasClass('sidenav-fixed') ) {
horizontalScrollCheck();
}
})
);
}
var options = {
timeNotation: '12h',
am_pm: true,
fontFamily: 'Verdana, Times New Roman',
fontSize: '20px',
foreground: 'yellow',
background: 'red'
}
$('#jclock1').jclock(options);
options["utc"]=true;
options["utc_offset"]=-1;
$('#jclock2').jclock(options);
});
</script>
</head>
<body>
<div id="wrapper">
<div id="header">
<h1>Conditional Fixed Positioning w/ jQuery</h1>
</div>
<div id="right-column">
<div id="sidenav-wrap">
<div id="sidenav">
<h2>Sticky Clock</h2>
<p><div class="corner"><div class="jclock"></div></div></p>
<p><div class="nocorner"><div class="jclock"></div></div></p>
<a href="#">Back to Top</a>
</div>
</div>
</div>
<div id="content">
<h2>Scrollable Content</h2>
<hr />
<a id="1"></a>
<h3>Ut consequat est vitae erat</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<h3>Opto tego, distineo luptatum</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<a id="2"></a>
<h3>Praesent egestas nulla vel</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<h3>Opto tego, distineo luptatum</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<a id="3"></a>
<h3>Aenean placerat libero vel</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<a id="4"></a>
<h3>Morbi viverra lacus pretium</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<a id="5"></a>
<h3>Ut sit amet orci at magna</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<a id="6"></a>
<h3>Suspendisse accumsan molestie</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
<a id="7"></a>
<h3>Praesent scelerisque</h3>
<p>Commoveo wisi nulla pala illum melior quis. Et luptatum validus wisi ingenium humo quidne, eros lucidus dolore ea vel amet. Capto, praemitto singularis tation duis consequat. Jus vulputate ingenium mauris ut, vero. Enim suscipit exerci eligo dolus decet elit transverbero. </p>
<p>Opto tego, distineo luptatum, amet virtus ideo bene in, vindico eum. Voco, proprius, tation jugis dolore consequat, adipiscing iusto eu, ingenium augue nimis, nostrud, lucidus. Qui tristique uxor ibidem iriure bis praesent os. Consequat zelus pagus abdo augue demoveo odio jus vel. </p>
</div>
</div>
</body>
</html>