Bootstrap中的show.bs.tab事件
该选项卡将要显示时，将触发show.bs.event。
使用nav-tabs类显示选项卡-
<ul class="nav nav-tabs"> <li class="active"><a href="#home">Home</a></li> <li><a href="#two">Java</a></li> <li><a href="#three">CSS</a></li> <li><a href="#four">Bootstrap</a></li> <li><a href="#five">jQuery</a></li> </ul>
之后，您需要使用show.bs.tab类在单击选项卡之后但在显示该选项之前生成警报-
$('.nav-tabs a').on('show.bs.tab', function(){
alert('New tab will be visible now!');
});您可以尝试运行以下代码来实现show.bs.tab事件-
示例
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<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://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Learn</h2>
<ul class="nav nav-tabs">
<li class="active"><a href="#home">Home</a></li>
<li><a href="#two">Java</a></li>
<li><a href="#three">CSS</a></li>
<li><a href="#four">Bootstrap</a></li>
<li><a href="#five">jQuery</a></li>
</ul>
<div class="tab-content">
<div id="home" class="tab-pane fade in active">
<h3>Home</h3>
<p>This is demo text!</p>
</div>
<div id="two" class="tab-pane fade">
<h3>PHP</h3>
<p>This is demo text!</p>
</div>
<div id="three" class="tab-pane fade">
<h3>C#.NET</h3>
<p>This is demo text!</p>
</div>
<div id="four" class="tab-pane fade">
<h3>Ruby</h3>
<p>This is demo text!</p>
</div>
<div id="five" class="tab-pane fade">
<h3>HTML5</h3>
<p>This is demo text!</p>
</div>
</div>
</div>
<script>
$(document).ready(function(){
$(".nav-tabs a").click(function(){
$(this).tab('show');
});
$('.nav-tabs a').on('show.bs.tab', function(){
alert('New tab will be visible now!');
});
$('.nav-tabs a').on('shown.bs.tab', function(){
alert('New tab is now visible!');
});
$('.nav-tabs a').on('hide.bs.tab', function(e){
alert('Previous tab will hide now!');
});
$('.nav-tabs a').on('hidden.bs.tab', function(){
alert('Previous Tab is hidden now!');
});
});
</script>
</body>
</html>