twitter-bootstrap 使用 .hide() 隐藏导航栏
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Hiding a navigation bar with .hide()
提问by Ryan
I have searched and searched trying to figure out what is wrong with my code. I would like to hide the navigation bar completely at a certain screen width but I am getting absolutely nothing. JS fiddle and Code Pen can't find anything and safari isn't showing syntax errors. I have only been at this a month, here it is I appreciate any help.
我搜索并搜索试图找出我的代码有什么问题。我想在某个屏幕宽度处完全隐藏导航栏，但我什么也没得到。JS fiddle 和 Code Pen 找不到任何东西，safari 也没有显示语法错误。我只在这里待了一个月，在这里我感谢任何帮助。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>No clue what I am doing</title>
<link href="css/bootstrap.min.css" rel="stylesheet"/>
<link href="stylesheet.css" rel="stylesheet" type="text/css" />
</head>
<body>
<nav class="navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="#">Link</a></li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="http://code.jquery.com/jquery-2.1.3.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="java.js" type="text/javascript"></script>
</body>
</html>
JAVASCRIPT
爪哇脚本
$(document).ready()
var width = function(checkWidth) {
if(window.width>768) {
$("nav .navbar-default").hide()
} else {
$("nav .navbar-default").show()
}
};
width;
回答by AndrewL64
You need to load the script on page load as well as on screen resize. This may help:
您需要在页面加载和屏幕调整大小时加载脚本。这可能有帮助：
function toggleDiv(){
if ($(window).width() < 768) {
$("nav.navbar-default").hide();
}else{
$("nav.navbar-default").show();
}
}
$(document).ready(function () {
toggleDiv();
$(window).resize(function(){
toggleDiv();
});
});
OR you can just use media queries like this:
或者你可以像这样使用媒体查询：
@media (max-width: 768px) {
.navbar-default {
display: none !important;
}
}
@media (min-width: 769px) {
.navbar-default {
display: block !important;
}
}
回答by David
You are attempting to hide a child with the class .navbar-defaultof your nav, when you are actually wanting to target the nav itself:
.navbar-default当您实际上想要定位导航本身时，您正试图用您的导航类隐藏一个孩子：
<nav class="navbar-default">
This is targeted as:
其目标是：
nav.navbar-default
not:
不是：
nav .navbar-default
That one space character is extremely important here.
那个空格符在这里极其重要。
回答by TbgUser
I have found two ways of finding the width of the user's screen in JS:
我找到了两种在 JS 中查找用户屏幕宽度的方法：
I hope they may be of assistance to you.
我希望他们能对你有所帮助。
