我是角色新手,我只是想在滚动时在两个bootstrap定义的菜单类之间切换。我想要实现的是当滚动不在页面顶部时,菜单保持固定在顶部并且改变了背景(在bootstrap css中提供)。我尝试过使用ng-class,但什么都没发生。谷歌浏览器检查员没有报告任何错误。以下是我到目前为止的情况:
HTML:
<html lang="en" ng-app = "cvApp">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<title>CV creation</title>
<!-- Bootstrap Core CSS -->
<link href="assets/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<!-- Theme CSS -->
<link href="assets/bootstrap/css/clean-blog.min.css" rel="stylesheet">
<!-- Custom Fonts -->
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Bitter:400,700">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body style="background-color:#FF0000;">
<div>
<nav class = "navbar navbar-default navbar-custom navbar-fixed-top"
ng-class="{'navbar navbar-default navbar-custom navbar-fixed-top is-fixed is-visible':boolChangeClass}">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<!-- 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 navbar-right">
<li>
<a href="post.html">Save</a>
</li>
<li>
<a href="contact.html">Export</a>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container -->
</nav>
</div>
<div>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br></div>
<script src="js/angular.min.js?q=123"></script>
<script src="js/angular-route.min.js?q=123"></script>
<script src="app/cvapp.js?q=123"></script>
<script src="app/Controllers/MenuController.js?q=123"></script>
</body>
</html>
模块&#34; cvApp&#34;与指令:
var cvApp = angular.module('cvApp', []);
cvApp.directive("scroll", function ($window) {
return function(scope, element, attrs) {
angular.element($window).bind("scroll", function() {
if (this.pageYOffset >= 0) {
scope.boolChangeClass = true;
} else {
scope.boolChangeClass = false;
}
scope.$apply();
});
};
});
我想要了解我做错了什么,并提前感谢你。
答案 0 :(得分:0)
在您提供的代码中,我无法在任何地方看到您在标记中使用该指令。
将您的标记更改为:
<nav scroll class = "navbar navbar-default navbar-custom navbar-fixed-top"
ng-class="{'navbar navbar-default navbar-custom navbar-fixed-top is-fixed is-visible':boolChangeClass}"> ...
它会起作用。
这是一个基本的小提琴例如(不包括bootstrap,但你可以看到该类正在滚动时应用,导航的背景从红色变为绿色):