我有一段具有登录页面的代码，如果我们单击登录按钮，则会弹出一个对话框。假设我只想在下拉列表中选择特定项目并单击对话框的“保存”按钮时才导航到特定页面。有没有一种方法可以检查是否选择了菜单中的特定项目，并且仅当单击按钮时才应执行与菜单项目相关联的操作。提前致谢。
<script src="./Signin Template for Bootstrap_files/ie10-viewport-bug-workaround.js"></script>
<script>
$(document).ready(function () {
$('#btn1').click(function () {
$("#dialog-form").dialog("open");
});
//code for dialog
$("#dialog-form").dialog
({
autoOpen: false,
height: 300,
width: 350,
modal: true,
zIndex: 1,
buttons: {
"Save": function () {
if ($("#name").val() == "" || $("#name").val().length < 5) {
$("#name").addClass("error");
$("#name").val('');
}
if ($("#password").val() == "" || $("#password").val().length < 5) {
$("#password").addClass("error");
$("#password").val('');
}
if ($("#email").val() == "" || $("#email").val().length < 5) {
$("#email").addClass("error");
$("#email").val('');
}
$('.dropdown-menu>li:nth-child(1)').click(function () {
window.location.href = "http://stackoverflow.com";
});
},
Cancel: function () {
$(this).dialog("close");
$("#name").val('');
$("#password").val('');
$("#email").val('');
}
}
});
});
</script>
<!DOCTYPE html>
<!-- saved from url=(0040)http://getbootstrap.com/examples/signin/ -->
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="http://getbootstrap.com/favicon.ico">
<title>Signin Template for Bootstrap</title>
<!-- Bootstrap core CSS -->
<link href="./Signin Template for Bootstrap_files/bootstrap.min.css" rel="stylesheet">
<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<link href="./Signin Template for Bootstrap_files/ie10-viewport-bug-workaround.css" rel="stylesheet">
<!-- Custom styles for this template -->
<link href="./Signin Template for Bootstrap_files/signin.css" rel="stylesheet">
<!-- Just for debugging purposes. Don't actually copy these 2 lines! -->
<!--[if lt IE 9]>
<script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]-->
<script src="./Signin Template for Bootstrap_files/ie-emulation-modes-warning.js"></script>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<script src="js/jquery-1.11.3.min.js"></script>
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script type="text/javascript"
src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.8/jquery.validate.min.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.2/themes/smoothness/jquery-ui.css"/>
<style type="text/css">
.error {
border-color: #F00
}
</style>
</head>
<body>
<div class="container">
<form class="form-signin" id="#sign-in">
<h2 class="form-signin-heading">Please sign in</h2>
<label for="inputEmail" class="sr-only">Email address</label>
<input type="email" id="inputEmail" class="form-control" placeholder="Email address" required="" autofocus="">
<label for="inputPassword" class="sr-only">Password</label>
<input type="password" id="inputPassword" class="form-control" placeholder="Password" required="">
<div class="checkbox">
<label>
<input type="checkbox" value="remember-me"> Remember me
</label>
</div>
<button class="btn btn-lg btn-primary btn-block" type="button" id="btn1">Sign in</button>
</form>
</div> <!-- /container -->
<div id="dialog" title="Dialog Form"></div>
<div id="dialog-form" title="Create new user">
<form id="register" name="register" action=" " method=" ">
<label for="name">Name</label>
<input type="text" name="name" id="name" required="true"/>
<br/>
<label for="email">Email</label>
<input type="text" name="email" id="email" required="true" email="true"/>
<br/>
<label for="password">Password</label>
<input type="password" name="password" id="password"/>
<label><input type="checkbox" value="">Male</label>
<label><input type="checkbox" value="">Female</label>
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown"
aria-haspopup="true" aria-expanded="true">
Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu" aria-labelledby="dropdownMenu1">
<li><a href="#">ECE</a></li>
<li><a href="#">AEEE</a></li>
<li><a href="#">CSE</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">First year</a></li>
</ul>
</div>
</form>
</div>
</body>
</html>试试这个：
jQuery(document).ready(function($) {
//remove the selected class from the element
$('.abc a').removeClass('selected')
$('.abc a').click( function(){
//add the class to the selected element
$(this).addClass('selected')
})
$('#btn1').click(function(){
var selectedLocation = $('.abc a.selected').attr('href')
window.location = selectedLocation
})
});
您的下拉菜单中还没有任何位置，但是我想您很清楚这一点！
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我来说两句