我使用的是Bootstrap提供的导航（以及其他地方提供的JavaScript）。
当屏幕变得足够小时，导航会变为离画布导航（当点击菜单图标时，它会滑到屏幕上） 这在手机视图上完美运行，但在平板电脑上，我仍然可以看到整个导航。 当改变最小宽度＆amp; max-width到更高的px（例如从767到800），它不起作用，导航消失，但导航图标在屏幕宽767px之前是不可见的。我不知道为什么会这样。并花了几个小时寻找修复。
谢谢。
^这个小提琴是工作版本^
http://jsfiddle.net/ezr8xrmc/1/
^这个小提琴是最大宽度＆amp;最小宽度改变^。
如果您需要更多信息，请告诉我们。
工作代码
<div class="navbar navbar-inverse" role="navigation" id="slide-nav">
<div class="container">
<div class="navbar-header">
<a class="navbar-toggle">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</a>
<a class="navbar-brand" href="#">Project name</a>
</div>
<div id="slidemenu">
<form class="navbar-form navbar-right" role="form">
<div class="form-group">
<input type="search" placeholder="search" class="form-control">
</div>
<button type="submit" class="btn btn-primary">Search</button>
</form>
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
<li class="dropdown"> <a href="#" class="dropdown-toggle" data- toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li class="dropdown-header">Nav header</li>
<li><a href="#">Separated link</a></li>
<li><a href="#">One more separated link</a></li>
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li class="dropdown-header">Nav header</li>
<li><a href="#">Separated link</a></li>
<li><a href="#">One more separated link</a></li>
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li class="dropdown-header">Nav header</li>
<li><a href="#">Separated link test long title goes here</a></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
</div>
</div>
</div>
<!--wrap the page content do not style this-->
<div id="page-content">
<div class="container" >
<h1 class="no-margin-top">Bootstrap starter template</h1>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
<p class="lead">Use this document as a way to quickly start any new project. All you get is this text and a mostly barebones HTML document.</p>
</div>
<!-- /.container -->
</div>
<!-- /#page-content -->
/* adjust body when menu is open */
body.slide-active {
overflow-x: hidden
}
/*first child of #page-content so it doesn't shift around*/
.no-margin-top {
margin-top: 0px!important
}
#page-content {
position: relative;
padding-top: 70px;
left: 0;
}
#page-content.slide-active {
padding-top: 0
}
/* put toggle bars on the left :: not using button */
#slide-nav .navbar-toggle {
cursor: pointer;
position: relative;
line-height: 0;
float: left;
margin: 0;
width: 30px;
height: 40px;
padding: 10px 0 0 0;
border: 0;
background: transparent;
}
/* icon bar prettyup - optional */
#slide-nav .navbar-toggle > .icon-bar {
width: 100%;
display: block;
height: 3px;
margin: 5px 0 0 0;
}
#slide-nav .navbar-toggle.slide-active .icon-bar {
background: orange
}
.navbar-header {
position: relative
}
.navbar.navbar-fixed-top.slide-active {
position: relative
}
@media (max-width:767px) {
#slide-nav .container {
margin: 0;
padding: 0!important;
}
#slide-nav .navbar-header {
margin: 0 auto;
padding: 0 15px;
}
#slide-nav .navbar.slide-active {
position: absolute;
width: 80%;
top: -1px;
z-index: 1000;
}
#slide-nav #slidemenu {
background: #f7f7f7;
left: -100%;
width: 80%;
min-width: 0;
position: absolute;
padding-left: 0;
z-index: 2;
top: -8px;
margin: 0;
}
#slide-nav #slidemenu .navbar-nav {
min-width: 0;
width: 100%;
margin: 0;
}
#slide-nav #slidemenu .navbar-nav .dropdown-menu li a {
min-width: 0;
width: 80%;
white-space: normal;
}
#slide-nav {
border-top: 0
}
#slide-nav.navbar-inverse #slidemenu {
background: #333
}
#slide-nav #navbar-height-col {
position: fixed;
top: 0;
height: 100%;
width: 80%;
left: -80%;
background: #eee;
}
#slide-nav.navbar-inverse #navbar-height-col {
background: #333;
z-index: 1;
border: 0;
}
#slide-nav .navbar-form {
width: 100%;
margin: 8px 0;
text-align: center;
overflow: hidden;
/*fast clearfixer*/
}
#slide-nav .navbar-form .form-control {
text-align: center
}
#slide-nav .navbar-form .btn {
width: 100%
}
}
@media (min-width:768px) {
#page-content {
left: 0!important
}
.navbar.navbar-fixed-top.slide-active {
position: fixed
}
.navbar-header {
left: 0!important
}
}
$(document).ready(function () {
//stick in the fixed 100% height behind the navbar but don't wrap it
$('#slide-nav.navbar .container').append($('<div id="navbar-height-col"> </div>'));
// Enter your ids or classes
var toggler = '.navbar-toggle';
var pagewrapper = '#page-content';
var navigationwrapper = '.navbar-header';
var menuwidth = '100%'; // the menu inside the slide menu itself
var slidewidth = '80%';
var menuneg = '-100%';
var slideneg = '-80%';
$("#slide-nav").on("click", toggler, function (e) {
var selected = $(this).hasClass('slide-active');
$('#slidemenu').stop().animate({
left: selected ? menuneg : '0px'
});
$('#navbar-height-col').stop().animate({
left: selected ? slideneg : '0px'
});
$(pagewrapper).stop().animate({
left: selected ? '0px' : slidewidth
});
$(navigationwrapper).stop().animate({
left: selected ? '0px' : slidewidth
});
$(this).toggleClass('slide-active', !selected);
$('#slidemenu').toggleClass('slide-active');
$('#page-content, .navbar, body, .navbar-header').toggleClass('slide-active');
});
var selected = '#slidemenu, #page-content, body, .navbar, .navbar-header';
$(window).on("resize", function () {
if ($(window).width() > 767 && $('.navbar-toggle').is(':hidden')) {
$(selected).removeClass('slide-active');
}
});
});
谢谢
答案 0 :(得分：1)
那是因为bootstrap仍然有使用“旧”值的选项，例如：
@media (min-width: 768px) {
.navbar-toggle {
display: none;
}
}
您需要覆盖所有这些属性。我在这里做到了：http://jsfiddle.net/ezr8xrmc/3/
@media (max-width:849px) {
[...]
/* OVERWRITING BOOTSTRAP */
.navbar-toggle {
display: block !important;
}
.navbar>.container .navbar-brand, .navbar>.container-fluid .navbar-brand {
margin-left: 0 !important;
}
}
@media (min-width:850px) {
[...]
/* OVERWRITING BOOTSTRAP */
.navbar-toggle {
display: none !important;
}
.navbar>.container .navbar-brand, .navbar>.container-fluid .navbar-brand {
margin-left: -15 !important;
}
}
不应该需要那些!important，但为了更好的阅读，我添加了它们。
我更喜欢自定义bootstrap而不是覆盖它：http://getbootstrap.com/customize/