Sat*_*ash 60 html css twitter-bootstrap
我正在学习Bootstrap.在入门菜单中,提供的模板很少.我正在玩那个.一个例子是关于固定页脚.我使用了前一个示例中的nav,并希望使用固定页脚进行调整.但垂直滚动条即将到来.我正在寻找导致垂直滚动条的元素.
这是HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Bootstrap, from Twitter</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<!-- Le styles -->
<link href="css/bootstrap.css" rel="stylesheet">
<style type="text/css">
/* Sticky footer styles
-------------------------------------------------- */
html,
body {
height: 100%;
/* The html and body elements cannot have any padding or margin. */
}
/* Wrapper for page content to push down footer */
#wrap {
min-height: 100%;
height: auto !important;
height: 100%;
/* Negative indent footer by it's height */
margin: 0 auto -60px;
}
/* Set the fixed height of the footer here */
#push,
#footer {
height: 60px;
}
#footer {
background-color: #f5f5f5;
}
/* Lastly, apply responsive CSS fixes as necessary */
@media (max-width: 767px) {
#footer {
margin-left: -20px;
margin-right: -20px;
padding-left: 20px;
padding-right: 20px;
}
}
/* Custom page CSS
-------------------------------------------------- */
/* Not required for template or sticky footer method. */
.container {
width: auto;
max-width: 680px;
height: auto;
}
.container .credit {
margin: 20px 0;
}
/* Adjust Nav */
#wrap > .container {
margin-top: 60px;
}
</style>
<link href="css/bootstrap-responsive.css" rel="stylesheet">
<!-- HTML5 shim, for IE6-8 support of HTML5 elements -->
<!--[if lt IE 9]>
<script src="html5shiv.js"></script>
<![endif]-->
<!-- Fav and touch icons -->
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="ico/apple-touch-icon-144-precomposed.png">
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="ico/apple-touch-icon-114-precomposed.png">
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="ico/apple-touch-icon-72-precomposed.png">
<link rel="apple-touch-icon-precomposed" href="ico/apple-touch-icon-57-precomposed.png">
<link rel="shortcut icon" href="ico/favicon.png">
</head>
<body>
<div id="wrap">
<div class="navbar navbar-inverse navbar-fixed-top" >
<div class="navbar-inner">
<div class="container">
<button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="#">Project name</a>
<div class="nav-collapse collapse">
<ul class="nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</div>
</div>
<div class="container">
<h1>Bootstrap starter template</h1>
<p>Use this document as a way to quick start any new project.<br> All you get is this message and a barebones HTML document.</p>
</div> <!-- /container -->
<div id="push"></div>
</div> <!-- End Wrap -->
<div id="footer">
<div class="container">
<p class="muted credit">Example courtesy <a href="http://martinbean.co.uk">Martin Bean</a> and <a href="http://ryanfait.com/sticky-footer/">Ryan Fait</a>.</p>
</div>
</div>
<!-- Le javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="../jquery.js"></script>
<script src="js-ext/bootstrap-transition.js"></script>
<script src="js-ext/bootstrap-alert.js"></script>
<script src="js-ext/bootstrap-modal.js"></script>
<script src="js-ext/bootstrap-dropdown.js"></script>
<script src="js-ext/bootstrap-scrollspy.js"></script>
<script src="js-ext/bootstrap-tab.js"></script>
<script src="js-ext/bootstrap-tooltip.js"></script>
<script src="js-ext/bootstrap-popover.js"></script>
<script src="js-ext/bootstrap-button.js"></script>
<script src="js-ext/bootstrap-collapse.js"></script>
<script src="js-ext/bootstrap-carousel.js"></script>
<script src="js-ext/bootstrap-typeahead.js"></script>
</body>
</html>
有没有任何技巧,在这些情况下可以知道哪个元素导致滚动条？我之前遇到过类似的问题,我不记得是否能找到简单的解决方案.
Jef*_*wrs 98
加:
* {
outline: 1px solid red;
}
然后当你向下滚动时,你会看到一个非常高的盒子.右键单击它并选择inspect元素.这应该会为您提供所需的信息.
更新:
这是一个漂亮的Chrome插件,可以为你做到这一点:http://pesticide.io/
lch*_*bon 27
将以下内容粘贴到控制台中并滚动。它将在控制台中记录罪魁祸首。
function findScroller(element) {
element.onscroll = function() { console.log(element)}
Array.from(element.children).forEach(findScroller);
}
findScroller(document.body);
Mos*_*ava 13
Chris Coyier 撰写了一篇很好的文章,解释了你对这个问题所需的一切.
阅读本文后,我个人在我的控制台中使用此代码来找出导致垂直滚动的元素:
F12在浏览器中按,然后选择console并复制粘贴此代码并按Enter键
var all = document.getElementsByTagName("*"), i = 0, rect, docWidth = document.documentElement.offsetWidth;
for (; i < all.length; i++) {
rect = all[i].getBoundingClientRect();
if (rect.right > docWidth || rect.left < 0){
console.log(all[i]);
all[i].style.border = '1px solid red';
}
}
更新:
它可能是iframe制作页面中垂直滚动的元素.在这种情况下,您应该使用以下代码检查每个可疑的iframe:
var frame = document.getElementsByTagName("iframe");
frame = frame[0];
frame = (frame.contentWindow || frame.contentDocument);
var all = frame.document.getElementsByTagName("*"), i = 0, rect, docWidth = document.documentElement.offsetWidth;
for (; i < all.length; i++) {
rect = all[i].getBoundingClientRect();
if (rect.right > docWidth || rect.left < 0){
console.log(all[i]);
all[i].style.border = '1px solid red';
}
}
好吧，我知道如果我将容器从margin-top更改为padding-top来调整导航，那么问题就解决了。我在删除 Firebug 中的元素后找到了解决方案。因此，快速修复问题已解决，但我的问题仍然悬而未决。
如何知道哪个元素导致滚动条？有什么窍门吗？
另外，为什么 margin-top 不起作用但 padding-top 起作用？
为了清楚地表明我在哪里进行了更改，我添加了修改后的 CSS：
/* Adjust Nav */
#wrap > .container {
padding-top: 60px;
}
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