单击按钮后显示警报

debugcn 发表于 Dev

测试帐号

我有一个按钮，单击后会弹出警报“ Hello”。第一次单击时效果很好，但是在关闭警报并再次单击按钮后，警报不会显示。请帮忙。

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"
	href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script
	src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script
	src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style>
.hidden {
	display: none;
}
</style>
<title>Show Alert</title>
</head>

<body id="page-top" data-spy="scroll" data-target=".navbar-fixed-top">
	<div class="container">

		<div class="row">
			<div class="alert alert-success hidden" id="success-alert">
				<button type="button" class="close" data-dismiss="alert">x</button>
				<span class="glyphicon glyphicon-ok"></span> Hello
			</div>
		</div>

		<div class="row">
			<button id="btn" type="button" class="btn btn-default">Open
				Alert</button>
		</div>
	</div>

	<script type="text/javascript">
		$(document).ready(function() {
			$("#btn").click(function() {
				$('#success-alert').removeClass('hidden');
			});

		});
	</script>
</body>

</html>

ab29007

您的hidden课程应该回来，但不是由于data-dismiss。data-dismiss从您的关闭按钮中删除，并向其附加一个click事件，这将使hidden单击时的类返回。这是工作代码。

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"
	href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script
	src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script
	src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<style>
.hidden {
	display: none;
}
</style>
<title>Show Alert</title>
</head>

<body id="page-top" data-spy="scroll" data-target=".navbar-fixed-top">
	<div class="container">

		<div class="row">
			<div class="alert alert-success hidden" id="success-alert">
				<button type="button" class="close">x</button>
				<span class="glyphicon glyphicon-ok"></span> Hello
			</div>
		</div>

		<div class="row">
			<button id="btn" type="button" class="btn btn-default">Open
				Alert</button>
		</div>
	</div>

	<script type="text/javascript">
		$(document).ready(function() {
			$("#btn").click(function() {
				$('#success-alert').removeClass('hidden');
			});
          $("button.close").click(function() {
				$('#success-alert').addClass('hidden');
			});

		});
	</script>
</body>

</html>

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