jquery mobile 4 回退

使用jquerymobile的时候,我们新进入一个页面可能需要添加一个返回按钮,用户返回到上一个页面,我们可以使用上一篇文章中的方法,在Header中添加返回上一个页面的链接,但是这样有一点不好,如果这个页面有多个入口(即可以从多个页面跳入本页面),那么我们这个返回就得做判断了。在这种情况下我们可以使用jquerymobile的data-add-back-btn属性,并将其值设为true。这样jquerymobile会自动为我们记住该返回哪个页面。下面看一个例子代码:

<!Doctype html>
<html>
	<head>
		<title>Phone Gap Introduce</title>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
		<link rel="stylesheet" type="text/css" href="../JS/jquery.mobile-1.3.2.min.css"/>
		<link rel="stylesheet" type="text/css" href="../JS/jquery.mobile.structure-1.3.2.css"/>
		<link rel="stylesheet" type="text/css" href="../JS/jquery.mobile.theme-1.3.2.css"/>
		<script type="text/javascript" src="../JS/jquery.js"></script>
		<script type="text/javascript" src="../JS/cordova.js"></script>
		<script type="text/javascript" src="../JS/jquery.mobile-1.3.2.min.js"></script>
		<script type="text/javascript">
			$('#PageOne').live('pageinit', function(event){

				var showTip = function(){
					navigator.notification.alert("this is a message from page one!", null, "Message", "Close");
					$(this).die("click");
				};
				
				var confirm = function(){
					navigator.notification.confirm(
					        'You are the winner!',  // message
					        null,              		// callback to invoke with index of button pressed
					        'Game Over',            // title
					        'Restart,Exit'          // buttonLabels
					    );
					$(this).die("click");
				};
				
				var redirectPage = function(){
					$.mobile.changePage("#PageTwo");
					$(this).die("click");
				};
				
				$(event.target).find('#alert').bind('click', showTip);
				$(event.target).find('#confirm').bind('click', confirm);
				$(event.target).find('#changePage').bind('click', redirectPage);
			});
			
			$('#PageTwo').live('pageshow', function(event){
				var showTip = function(){
					navigator.notification.alert("this is a message from page two!", null, "Message", "Close");
					$(this).die("click");
				};
				
				var confirm = function(){
					navigator.notification.confirm(
					        'You are the losser!',  // message
					        null,              		// callback to invoke with index of button pressed
					        'Game Over',            // title
					        'Restart,Exit'          // buttonLabels
					    );
					$(this).die("click");
				};
				$(event.target).find('#alert').bind('click', showTip);
				$(event.target).find('#confirm').bind('click', confirm);
			});
		</script>
	</head>
	<body>
		<div id="PageOne" data-role="page">
			<div data-role="header" data-backbtn="false">
				<h1>Phone Gap One</h1>
			</div>
			<div data-role="content">
				<div>
					<a href="#" id="alert" data-role="button" data-theme="b">Alert</a>
				</div>
				<div>
					<a href="#" id="confirm" data-role="button" data-theme="b">Confirm</a>
				</div>
				<div>
					<a href="#" id="changePage" data-role="button" data-theme="b">Change Page</a>
				</div>
			</div>
			<div data-role="footer">
				<div data-role="navbar">
					<ul>
						<li><a href="#PageOne">Page One</a></li>
						<li><a href="#PageTwo">Page Two</a></li>
					</ul>
				</div>
			</div>
		</div>
		<div id="PageTwo" data-role="page">
			<div data-role="header" data-backbtn="true">
				<h1>Phone Gap Two</h1>
				<a data-role="button" data-rel="back">Previous</a>
			</div>
			<div data-role="content">
				<div>
					<a href="#" id="alert" data-role="button" data-theme="b">Alert</a>
				</div>
				<div>
					<a href="#" id="confirm" data-role="button" data-theme="b">Confirm</a>
				</div>
				<div>
					<a href="file:///android_asset/www/Pages/pageThree.html" data-role="button" data-theme="b" data-prefetch>Page Three</a>
					 You can also <a href="#aboutPage">learn more</a> about Megacorp.  
				</div>
			</div>
			<div data-role="footer">
				<div data-role="navbar">
					<ul>
						<li><a href="#PageOne">Page One</a></li>
						<li><a href="#PageTwo">Page Two</a></li>
					</ul>
				</div>
			</div>
		</div>
	</body>
</html>

回退:<a data-role="button" data-rel="back">Previous</a>

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